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Finding the Fourth Proportional to 108,338.85, 149,503.05 and 63,016.92

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Solution

The fourth proportional to 108,338.85, 149,503.05 and 63,016.92 is: 86,960.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,338.85 : 149,503.05 = 63,016.92 : x
  2. Step 2: Convert to fraction form
    108,338.85/149,503.05 = 63,016.92/x
  3. Step 3: Cross multiply
    108,338.85x = 149,503.05 × 63,016.92
  4. Step 4: Simplify right side
    108,338.85x = 9,421,221,741.61
  5. Step 5: Solve for x
    x = 9,421,221,741.61/108,338.85
  6. Step 6: Final answer
    x = 86,960.70

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1.5x scale

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.