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Finding the Fourth Proportional to 157,385.06, 217,191.06 and 85,764.91

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Solution

The fourth proportional to 157,385.06, 217,191.06 and 85,764.91 is: 118,355.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,385.06 : 217,191.06 = 85,764.91 : x
  2. Step 2: Convert to fraction form
    157,385.06/217,191.06 = 85,764.91/x
  3. Step 3: Cross multiply
    157,385.06x = 217,191.06 × 85,764.91
  4. Step 4: Simplify right side
    157,385.06x = 18,627,371,713.70
  5. Step 5: Solve for x
    x = 18,627,371,713.70/157,385.06
  6. Step 6: Final answer
    x = 118,355.40

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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.