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Finding the Fourth Proportional to 714,197.27, 985,591.67 and 391,927.64

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Solution

The fourth proportional to 714,197.27, 985,591.67 and 391,927.64 is: 540,859.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,197.27 : 985,591.67 = 391,927.64 : x
  2. Step 2: Convert to fraction form
    714,197.27/985,591.67 = 391,927.64/x
  3. Step 3: Cross multiply
    714,197.27x = 985,591.67 × 391,927.64
  4. Step 4: Simplify right side
    714,197.27x = 386,280,610,339.16
  5. Step 5: Solve for x
    x = 386,280,610,339.16/714,197.27
  6. Step 6: Final answer
    x = 540,859.82

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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.