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Finding the Fourth Proportional to 90,806.67, 125,242.20 and 58,985.82

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Solution

The fourth proportional to 90,806.67, 125,242.20 and 58,985.82 is: 81,354.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,806.67 : 125,242.20 = 58,985.82 : x
  2. Step 2: Convert to fraction form
    90,806.67/125,242.20 = 58,985.82/x
  3. Step 3: Cross multiply
    90,806.67x = 125,242.20 × 58,985.82
  4. Step 4: Simplify right side
    90,806.67x = 7,387,513,865.60
  5. Step 5: Solve for x
    x = 7,387,513,865.60/90,806.67
  6. Step 6: Final answer
    x = 81,354.31

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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.