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Finding the Fourth Proportional to 91,695.48, 126,550.13 and 61,066.88

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Solution

The fourth proportional to 91,695.48, 126,550.13 and 61,066.88 is: 84,279.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,695.48 : 126,550.13 = 61,066.88 : x
  2. Step 2: Convert to fraction form
    91,695.48/126,550.13 = 61,066.88/x
  3. Step 3: Cross multiply
    91,695.48x = 126,550.13 × 61,066.88
  4. Step 4: Simplify right side
    91,695.48x = 7,728,020,664.61
  5. Step 5: Solve for x
    x = 7,728,020,664.61/91,695.48
  6. Step 6: Final answer
    x = 84,279.19

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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.