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Finding the Fourth Proportional to 681,591.60, 940,600.28 and 395,281.52

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Solution

The fourth proportional to 681,591.60, 940,600.28 and 395,281.52 is: 545,490.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,591.60 : 940,600.28 = 395,281.52 : x
  2. Step 2: Convert to fraction form
    681,591.60/940,600.28 = 395,281.52/x
  3. Step 3: Cross multiply
    681,591.60x = 940,600.28 × 395,281.52
  4. Step 4: Simplify right side
    681,591.60x = 371,801,908,390.83
  5. Step 5: Solve for x
    x = 371,801,908,390.83/681,591.60
  6. Step 6: Final answer
    x = 545,490.74

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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.