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Finding the Fourth Proportional to 125,457.52, 173,119.87 and 74,461.48

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Solution

The fourth proportional to 125,457.52, 173,119.87 and 74,461.48 is: 102,750.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,457.52 : 173,119.87 = 74,461.48 : x
  2. Step 2: Convert to fraction form
    125,457.52/173,119.87 = 74,461.48/x
  3. Step 3: Cross multiply
    125,457.52x = 173,119.87 × 74,461.48
  4. Step 4: Simplify right side
    125,457.52x = 12,890,761,737.61
  5. Step 5: Solve for x
    x = 12,890,761,737.61/125,457.52
  6. Step 6: Final answer
    x = 102,750.01

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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.