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Finding the Fourth Proportional to 91,798.74, 126,635.13 and 61,224.48

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Solution

The fourth proportional to 91,798.74, 126,635.13 and 61,224.48 is: 84,458.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,798.74 : 126,635.13 = 61,224.48 : x
  2. Step 2: Convert to fraction form
    91,798.74/126,635.13 = 61,224.48/x
  3. Step 3: Cross multiply
    91,798.74x = 126,635.13 × 61,224.48
  4. Step 4: Simplify right side
    91,798.74x = 7,753,169,983.98
  5. Step 5: Solve for x
    x = 7,753,169,983.98/91,798.74
  6. Step 6: Final answer
    x = 84,458.35

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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.