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Finding the Fourth Proportional to 175,374.78, 242,040.90 and 98,909.58

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Solution

The fourth proportional to 175,374.78, 242,040.90 and 98,909.58 is: 136,508.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,374.78 : 242,040.90 = 98,909.58 : x
  2. Step 2: Convert to fraction form
    175,374.78/242,040.90 = 98,909.58/x
  3. Step 3: Cross multiply
    175,374.78x = 242,040.90 × 98,909.58
  4. Step 4: Simplify right side
    175,374.78x = 23,940,163,761.82
  5. Step 5: Solve for x
    x = 23,940,163,761.82/175,374.78
  6. Step 6: Final answer
    x = 136,508.59

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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.