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Finding the Fourth Proportional to 108,605.28, 149,860.08 and 60,854.88

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Solution

The fourth proportional to 108,605.28, 149,860.08 and 60,854.88 is: 83,971.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,605.28 : 149,860.08 = 60,854.88 : x
  2. Step 2: Convert to fraction form
    108,605.28/149,860.08 = 60,854.88/x
  3. Step 3: Cross multiply
    108,605.28x = 149,860.08 × 60,854.88
  4. Step 4: Simplify right side
    108,605.28x = 9,119,717,185.19
  5. Step 5: Solve for x
    x = 9,119,717,185.19/108,605.28
  6. Step 6: Final answer
    x = 83,971.21

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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.