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Finding the Fourth Proportional to 621,995.10, 933,976.80 and 472,404.30

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Solution

The fourth proportional to 621,995.10, 933,976.80 and 472,404.30 is: 709,353.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,995.10 : 933,976.80 = 472,404.30 : x
  2. Step 2: Convert to fraction form
    621,995.10/933,976.80 = 472,404.30/x
  3. Step 3: Cross multiply
    621,995.10x = 933,976.80 × 472,404.30
  4. Step 4: Simplify right side
    621,995.10x = 441,214,656,420.24
  5. Step 5: Solve for x
    x = 441,214,656,420.24/621,995.10
  6. Step 6: Final answer
    x = 709,353.91

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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.