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Finding the Fourth Proportional to 641,684,411.80, 962,526,617.70 and 297,310,643.80

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Solution

The fourth proportional to 641,684,411.80, 962,526,617.70 and 297,310,643.80 is: 445,965,965.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,684,411.80 : 962,526,617.70 = 297,310,643.80 : x
  2. Step 2: Convert to fraction form
    641,684,411.80/962,526,617.70 = 297,310,643.80/x
  3. Step 3: Cross multiply
    641,684,411.80x = 962,526,617.70 × 297,310,643.80
  4. Step 4: Simplify right side
    641,684,411.80x = 286,169,408,383,023,488
  5. Step 5: Solve for x
    x = 286,169,408,383,023,488/641,684,411.80
  6. Step 6: Final answer
    x = 445,965,965.70

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Double scale
Find fourth proportional to 641,684,412.80, 962,526,619.20 and 297,310,644.80
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.