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Finding the Fourth Proportional to 157,706.97, 217,638.68 and 86,093.25

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Solution

The fourth proportional to 157,706.97, 217,638.68 and 86,093.25 is: 118,810.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,706.97 : 217,638.68 = 86,093.25 : x
  2. Step 2: Convert to fraction form
    157,706.97/217,638.68 = 86,093.25/x
  3. Step 3: Cross multiply
    157,706.97x = 217,638.68 × 86,093.25
  4. Step 4: Simplify right side
    157,706.97x = 18,737,220,856.44
  5. Step 5: Solve for x
    x = 18,737,220,856.44/157,706.97
  6. Step 6: Final answer
    x = 118,810.35

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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.