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Finding the Fourth Proportional to 157,717.63, 217,650.72 and 86,097.70

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Solution

The fourth proportional to 157,717.63, 217,650.72 and 86,097.70 is: 118,815.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,717.63 : 217,650.72 = 86,097.70 : x
  2. Step 2: Convert to fraction form
    157,717.63/217,650.72 = 86,097.70/x
  3. Step 3: Cross multiply
    157,717.63x = 217,650.72 × 86,097.70
  4. Step 4: Simplify right side
    157,717.63x = 18,739,226,395.34
  5. Step 5: Solve for x
    x = 18,739,226,395.34/157,717.63
  6. Step 6: Final answer
    x = 118,815.04

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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.