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Finding the Fourth Proportional to 621,998.10, 933,981.30 and 472,407.30

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Solution

The fourth proportional to 621,998.10, 933,981.30 and 472,407.30 is: 709,358.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,998.10 : 933,981.30 = 472,407.30 : x
  2. Step 2: Convert to fraction form
    621,998.10/933,981.30 = 472,407.30/x
  3. Step 3: Cross multiply
    621,998.10x = 933,981.30 × 472,407.30
  4. Step 4: Simplify right side
    621,998.10x = 441,219,584,183.49
  5. Step 5: Solve for x
    x = 441,219,584,183.49/621,998.10
  6. Step 6: Final answer
    x = 709,358.41

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Double scale
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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.