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Finding the Fourth Proportional to 74,806.76, 112,180.86 and 28,034.12

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Solution

The fourth proportional to 74,806.76, 112,180.86 and 28,034.12 is: 42,040.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,806.76 : 112,180.86 = 28,034.12 : x
  2. Step 2: Convert to fraction form
    74,806.76/112,180.86 = 28,034.12/x
  3. Step 3: Cross multiply
    74,806.76x = 112,180.86 × 28,034.12
  4. Step 4: Simplify right side
    74,806.76x = 3,144,891,690.94
  5. Step 5: Solve for x
    x = 3,144,891,690.94/74,806.76
  6. Step 6: Final answer
    x = 42,040.21

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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.