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Finding the Fourth Proportional to 714,516.67, 986,029.10 and 392,232.25

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Solution

The fourth proportional to 714,516.67, 986,029.10 and 392,232.25 is: 541,278.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,516.67 : 986,029.10 = 392,232.25 : x
  2. Step 2: Convert to fraction form
    714,516.67/986,029.10 = 392,232.25/x
  3. Step 3: Cross multiply
    714,516.67x = 986,029.10 × 392,232.25
  4. Step 4: Simplify right side
    714,516.67x = 386,752,412,458.48
  5. Step 5: Solve for x
    x = 386,752,412,458.48/714,516.67
  6. Step 6: Final answer
    x = 541,278.36

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.