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Finding the Fourth Proportional to 86,615.68, 119,493.48 and 58,272.16

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Solution

The fourth proportional to 86,615.68, 119,493.48 and 58,272.16 is: 80,391.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,615.68 : 119,493.48 = 58,272.16 : x
  2. Step 2: Convert to fraction form
    86,615.68/119,493.48 = 58,272.16/x
  3. Step 3: Cross multiply
    86,615.68x = 119,493.48 × 58,272.16
  4. Step 4: Simplify right side
    86,615.68x = 6,963,143,185.52
  5. Step 5: Solve for x
    x = 6,963,143,185.52/86,615.68
  6. Step 6: Final answer
    x = 80,391.25

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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.