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Finding the Fourth Proportional to 74,972.67, 112,403.46 and 45,383.52

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Solution

The fourth proportional to 74,972.67, 112,403.46 and 45,383.52 is: 68,041.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,972.67 : 112,403.46 = 45,383.52 : x
  2. Step 2: Convert to fraction form
    74,972.67/112,403.46 = 45,383.52/x
  3. Step 3: Cross multiply
    74,972.67x = 112,403.46 × 45,383.52
  4. Step 4: Simplify right side
    74,972.67x = 5,101,264,674.98
  5. Step 5: Solve for x
    x = 5,101,264,674.98/74,972.67
  6. Step 6: Final answer
    x = 68,041.66

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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.