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Finding the Fourth Proportional to 108,387.52, 149,624.97 and 63,048.98

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Solution

The fourth proportional to 108,387.52, 149,624.97 and 63,048.98 is: 87,036.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,387.52 : 149,624.97 = 63,048.98 : x
  2. Step 2: Convert to fraction form
    108,387.52/149,624.97 = 63,048.98/x
  3. Step 3: Cross multiply
    108,387.52x = 149,624.97 × 63,048.98
  4. Step 4: Simplify right side
    108,387.52x = 9,433,701,741.03
  5. Step 5: Solve for x
    x = 9,433,701,741.03/108,387.52
  6. Step 6: Final answer
    x = 87,036.79

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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.