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Finding the Fourth Proportional to 108,520.53, 163,030.95 and 104,036.61

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Solution

The fourth proportional to 108,520.53, 163,030.95 and 104,036.61 is: 156,294.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,520.53 : 163,030.95 = 104,036.61 : x
  2. Step 2: Convert to fraction form
    108,520.53/163,030.95 = 104,036.61/x
  3. Step 3: Cross multiply
    108,520.53x = 163,030.95 × 104,036.61
  4. Step 4: Simplify right side
    108,520.53x = 16,961,187,363.08
  5. Step 5: Solve for x
    x = 16,961,187,363.08/108,520.53
  6. Step 6: Final answer
    x = 156,294.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.