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Finding the Fourth Proportional to 157,886.67, 217,881.03 and 86,265.15

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Solution

The fourth proportional to 157,886.67, 217,881.03 and 86,265.15 is: 119,044.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,886.67 : 217,881.03 = 86,265.15 : x
  2. Step 2: Convert to fraction form
    157,886.67/217,881.03 = 86,265.15/x
  3. Step 3: Cross multiply
    157,886.67x = 217,881.03 × 86,265.15
  4. Step 4: Simplify right side
    157,886.67x = 18,795,539,735.10
  5. Step 5: Solve for x
    x = 18,795,539,735.10/157,886.67
  6. Step 6: Final answer
    x = 119,044.50

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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.