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Finding the Fourth Proportional to 714,818.18, 986,410.41 and 392,570.66

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Solution

The fourth proportional to 714,818.18, 986,410.41 and 392,570.66 is: 541,726.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,818.18 : 986,410.41 = 392,570.66 : x
  2. Step 2: Convert to fraction form
    714,818.18/986,410.41 = 392,570.66/x
  3. Step 3: Cross multiply
    714,818.18x = 986,410.41 × 392,570.66
  4. Step 4: Simplify right side
    714,818.18x = 387,235,785,684.57
  5. Step 5: Solve for x
    x = 387,235,785,684.57/714,818.18
  6. Step 6: Final answer
    x = 541,726.27

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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.