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Finding the Fourth Proportional to 714,803.76, 986,380.29 and 392,534.73

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Solution

The fourth proportional to 714,803.76, 986,380.29 and 392,534.73 is: 541,671.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,803.76 : 986,380.29 = 392,534.73 : x
  2. Step 2: Convert to fraction form
    714,803.76/986,380.29 = 392,534.73/x
  3. Step 3: Cross multiply
    714,803.76x = 986,380.29 × 392,534.73
  4. Step 4: Simplify right side
    714,803.76x = 387,188,520,812.47
  5. Step 5: Solve for x
    x = 387,188,520,812.47/714,803.76
  6. Step 6: Final answer
    x = 541,671.07

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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.