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Finding the Fourth Proportional to 157,635.57, 217,537.65 and 86,017.17

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Solution

The fourth proportional to 157,635.57, 217,537.65 and 86,017.17 is: 118,704.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,635.57 : 217,537.65 = 86,017.17 : x
  2. Step 2: Convert to fraction form
    157,635.57/217,537.65 = 86,017.17/x
  3. Step 3: Cross multiply
    157,635.57x = 217,537.65 × 86,017.17
  4. Step 4: Simplify right side
    157,635.57x = 18,711,973,021.45
  5. Step 5: Solve for x
    x = 18,711,973,021.45/157,635.57
  6. Step 6: Final answer
    x = 118,704.00

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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.