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Finding the Fourth Proportional to 159,073.28, 219,521.52 and 91,091.28

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Solution

The fourth proportional to 159,073.28, 219,521.52 and 91,091.28 is: 125,706.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,073.28 : 219,521.52 = 91,091.28 : x
  2. Step 2: Convert to fraction form
    159,073.28/219,521.52 = 91,091.28/x
  3. Step 3: Cross multiply
    159,073.28x = 219,521.52 × 91,091.28
  4. Step 4: Simplify right side
    159,073.28x = 19,996,496,244.35
  5. Step 5: Solve for x
    x = 19,996,496,244.35/159,073.28
  6. Step 6: Final answer
    x = 125,706.19

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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.