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Finding the Fourth Proportional to 98,167.88, 147,173.82 and 42,725

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Solution

The fourth proportional to 98,167.88, 147,173.82 and 42,725 is: 64,053.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,167.88 : 147,173.82 = 42,725 : x
  2. Step 2: Convert to fraction form
    98,167.88/147,173.82 = 42,725/x
  3. Step 3: Cross multiply
    98,167.88x = 147,173.82 × 42,725
  4. Step 4: Simplify right side
    98,167.88x = 6,288,001,459.50
  5. Step 5: Solve for x
    x = 6,288,001,459.50/98,167.88
  6. Step 6: Final answer
    x = 64,053.55

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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.