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Finding the Fourth Proportional to 74,552.80, 111,634.80 and 48,114.40

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Solution

The fourth proportional to 74,552.80, 111,634.80 and 48,114.40 is: 72,046.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,552.80 : 111,634.80 = 48,114.40 : x
  2. Step 2: Convert to fraction form
    74,552.80/111,634.80 = 48,114.40/x
  3. Step 3: Cross multiply
    74,552.80x = 111,634.80 × 48,114.40
  4. Step 4: Simplify right side
    74,552.80x = 5,371,241,421.12
  5. Step 5: Solve for x
    x = 5,371,241,421.12/74,552.80
  6. Step 6: Final answer
    x = 72,046.14

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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.