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Finding the Fourth Proportional to 185,987.81, 256,663.28 and 101,104.88

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Solution

The fourth proportional to 185,987.81, 256,663.28 and 101,104.88 is: 139,524.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,987.81 : 256,663.28 = 101,104.88 : x
  2. Step 2: Convert to fraction form
    185,987.81/256,663.28 = 101,104.88/x
  3. Step 3: Cross multiply
    185,987.81x = 256,663.28 × 101,104.88
  4. Step 4: Simplify right side
    185,987.81x = 25,949,909,094.25
  5. Step 5: Solve for x
    x = 25,949,909,094.25/185,987.81
  6. Step 6: Final answer
    x = 139,524.78

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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.