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Finding the Fourth Proportional to 90,663.66, 135,856.98 and 38,044.44

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Solution

The fourth proportional to 90,663.66, 135,856.98 and 38,044.44 is: 57,008.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,663.66 : 135,856.98 = 38,044.44 : x
  2. Step 2: Convert to fraction form
    90,663.66/135,856.98 = 38,044.44/x
  3. Step 3: Cross multiply
    90,663.66x = 135,856.98 × 38,044.44
  4. Step 4: Simplify right side
    90,663.66x = 5,168,602,724.19
  5. Step 5: Solve for x
    x = 5,168,602,724.19/90,663.66
  6. Step 6: Final answer
    x = 57,008.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.