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Finding the Fourth Proportional to 157,001.91, 216,660.59 and 85,380.39

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Solution

The fourth proportional to 157,001.91, 216,660.59 and 85,380.39 is: 117,823.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,001.91 : 216,660.59 = 85,380.39 : x
  2. Step 2: Convert to fraction form
    157,001.91/216,660.59 = 85,380.39/x
  3. Step 3: Cross multiply
    157,001.91x = 216,660.59 × 85,380.39
  4. Step 4: Simplify right side
    157,001.91x = 18,498,565,671.83
  5. Step 5: Solve for x
    x = 18,498,565,671.83/157,001.91
  6. Step 6: Final answer
    x = 117,823.83

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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.