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Finding the Fourth Proportional to 108,661.50, 149,953.41 and 63,370.89

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Solution

The fourth proportional to 108,661.50, 149,953.41 and 63,370.89 is: 87,452.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,661.50 : 149,953.41 = 63,370.89 : x
  2. Step 2: Convert to fraction form
    108,661.50/149,953.41 = 63,370.89/x
  3. Step 3: Cross multiply
    108,661.50x = 149,953.41 × 63,370.89
  4. Step 4: Simplify right side
    108,661.50x = 9,502,681,050.23
  5. Step 5: Solve for x
    x = 9,502,681,050.23/108,661.50
  6. Step 6: Final answer
    x = 87,452.14

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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.