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Finding the Fourth Proportional to 157,671.28, 217,587.08 and 86,052.88

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Solution

The fourth proportional to 157,671.28, 217,587.08 and 86,052.88 is: 118,753.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,671.28 : 217,587.08 = 86,052.88 : x
  2. Step 2: Convert to fraction form
    157,671.28/217,587.08 = 86,052.88/x
  3. Step 3: Cross multiply
    157,671.28x = 217,587.08 × 86,052.88
  4. Step 4: Simplify right side
    157,671.28x = 18,723,994,884.79
  5. Step 5: Solve for x
    x = 18,723,994,884.79/157,671.28
  6. Step 6: Final answer
    x = 118,753.36

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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.