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Finding the Fourth Proportional to 621,800.85, 932,701.28 and 472,501.65

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Solution

The fourth proportional to 621,800.85, 932,701.28 and 472,501.65 is: 708,752.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,800.85 : 932,701.28 = 472,501.65 : x
  2. Step 2: Convert to fraction form
    621,800.85/932,701.28 = 472,501.65/x
  3. Step 3: Cross multiply
    621,800.85x = 932,701.28 × 472,501.65
  4. Step 4: Simplify right side
    621,800.85x = 440,702,891,394.60
  5. Step 5: Solve for x
    x = 440,702,891,394.60/621,800.85
  6. Step 6: Final answer
    x = 708,752.48

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Double scale
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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.