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Finding the Fourth Proportional to 663,900,276.60, 930,820,876.20 and 663,900,276.60

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Solution

The fourth proportional to 663,900,276.60, 930,820,876.20 and 663,900,276.60 is: 930,820,876.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,900,276.60 : 930,820,876.20 = 663,900,276.60 : x
  2. Step 2: Convert to fraction form
    663,900,276.60/930,820,876.20 = 663,900,276.60/x
  3. Step 3: Cross multiply
    663,900,276.60x = 930,820,876.20 × 663,900,276.60
  4. Step 4: Simplify right side
    663,900,276.60x = 617,972,237,174,234,368
  5. Step 5: Solve for x
    x = 617,972,237,174,234,368/663,900,276.60
  6. Step 6: Final answer
    x = 930,820,876.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.