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Finding the Fourth Proportional to 714,606.69, 986,158.88 and 392,337.56

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Solution

The fourth proportional to 714,606.69, 986,158.88 and 392,337.56 is: 541,426.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,606.69 : 986,158.88 = 392,337.56 : x
  2. Step 2: Convert to fraction form
    714,606.69/986,158.88 = 392,337.56/x
  3. Step 3: Cross multiply
    714,606.69x = 986,158.88 × 392,337.56
  4. Step 4: Simplify right side
    714,606.69x = 386,907,161,859.05
  5. Step 5: Solve for x
    x = 386,907,161,859.05/714,606.69
  6. Step 6: Final answer
    x = 541,426.73

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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.