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Finding the Fourth Proportional to 74,748.80, 112,279.20 and 63,084.80

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Solution

The fourth proportional to 74,748.80, 112,279.20 and 63,084.80 is: 94,758.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,748.80 : 112,279.20 = 63,084.80 : x
  2. Step 2: Convert to fraction form
    74,748.80/112,279.20 = 63,084.80/x
  3. Step 3: Cross multiply
    74,748.80x = 112,279.20 × 63,084.80
  4. Step 4: Simplify right side
    74,748.80x = 7,083,110,876.16
  5. Step 5: Solve for x
    x = 7,083,110,876.16/74,748.80
  6. Step 6: Final answer
    x = 94,758.86

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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.