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Finding the Fourth Proportional to 621,808.10, 932,712.15 and 222,640.10

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Solution

The fourth proportional to 621,808.10, 932,712.15 and 222,640.10 is: 333,960.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,808.10 : 932,712.15 = 222,640.10 : x
  2. Step 2: Convert to fraction form
    621,808.10/932,712.15 = 222,640.10/x
  3. Step 3: Cross multiply
    621,808.10x = 932,712.15 × 222,640.10
  4. Step 4: Simplify right side
    621,808.10x = 207,659,126,347.22
  5. Step 5: Solve for x
    x = 207,659,126,347.22/621,808.10
  6. Step 6: Final answer
    x = 333,960.15

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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.