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Finding the Fourth Proportional to 140,615.52, 193,959.84 and 98,158.56

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Solution

The fourth proportional to 140,615.52, 193,959.84 and 98,158.56 is: 135,396.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,615.52 : 193,959.84 = 98,158.56 : x
  2. Step 2: Convert to fraction form
    140,615.52/193,959.84 = 98,158.56/x
  3. Step 3: Cross multiply
    140,615.52x = 193,959.84 × 98,158.56
  4. Step 4: Simplify right side
    140,615.52x = 19,038,818,592.23
  5. Step 5: Solve for x
    x = 19,038,818,592.23/140,615.52
  6. Step 6: Final answer
    x = 135,396.28

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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.