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Finding the Fourth Proportional to 75,003.70, 112,505.55 and 48,738.10

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Solution

The fourth proportional to 75,003.70, 112,505.55 and 48,738.10 is: 73,107.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,003.70 : 112,505.55 = 48,738.10 : x
  2. Step 2: Convert to fraction form
    75,003.70/112,505.55 = 48,738.10/x
  3. Step 3: Cross multiply
    75,003.70x = 112,505.55 × 48,738.10
  4. Step 4: Simplify right side
    75,003.70x = 5,483,306,746.46
  5. Step 5: Solve for x
    x = 5,483,306,746.46/75,003.70
  6. Step 6: Final answer
    x = 73,107.15

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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.