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Finding the Fourth Proportional to 714,614.72, 986,164.16 and 392,330.24

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Solution

The fourth proportional to 714,614.72, 986,164.16 and 392,330.24 is: 541,413.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,614.72 : 986,164.16 = 392,330.24 : x
  2. Step 2: Convert to fraction form
    714,614.72/986,164.16 = 392,330.24/x
  3. Step 3: Cross multiply
    714,614.72x = 986,164.16 × 392,330.24
  4. Step 4: Simplify right side
    714,614.72x = 386,902,021,572.20
  5. Step 5: Solve for x
    x = 386,902,021,572.20/714,614.72
  6. Step 6: Final answer
    x = 541,413.45

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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.