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Finding the Fourth Proportional to 714,614.32, 986,170.48 and 392,357.44

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Solution

The fourth proportional to 714,614.32, 986,170.48 and 392,357.44 is: 541,454.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,614.32 : 986,170.48 = 392,357.44 : x
  2. Step 2: Convert to fraction form
    714,614.32/986,170.48 = 392,357.44/x
  3. Step 3: Cross multiply
    714,614.32x = 986,170.48 × 392,357.44
  4. Step 4: Simplify right side
    714,614.32x = 386,931,324,936.37
  5. Step 5: Solve for x
    x = 386,931,324,936.37/714,614.32
  6. Step 6: Final answer
    x = 541,454.76

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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.