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Finding the Fourth Proportional to 108,062.80, 149,129.48 and 60,315.92

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Solution

The fourth proportional to 108,062.80, 149,129.48 and 60,315.92 is: 83,237.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,062.80 : 149,129.48 = 60,315.92 : x
  2. Step 2: Convert to fraction form
    108,062.80/149,129.48 = 60,315.92/x
  3. Step 3: Cross multiply
    108,062.80x = 149,129.48 × 60,315.92
  4. Step 4: Simplify right side
    108,062.80x = 8,994,881,785.32
  5. Step 5: Solve for x
    x = 8,994,881,785.32/108,062.80
  6. Step 6: Final answer
    x = 83,237.54

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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.