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Finding the Fourth Proportional to 622,930.60, 933,812.70 and 487,919.80

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Solution

The fourth proportional to 622,930.60, 933,812.70 and 487,919.80 is: 731,422.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,930.60 : 933,812.70 = 487,919.80 : x
  2. Step 2: Convert to fraction form
    622,930.60/933,812.70 = 487,919.80/x
  3. Step 3: Cross multiply
    622,930.60x = 933,812.70 × 487,919.80
  4. Step 4: Simplify right side
    622,930.60x = 455,625,705,821.46
  5. Step 5: Solve for x
    x = 455,625,705,821.46/622,930.60
  6. Step 6: Final answer
    x = 731,422.90

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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.