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Finding the Fourth Proportional to 74,894.60, 112,374.57 and 39,793.16

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Solution

The fourth proportional to 74,894.60, 112,374.57 and 39,793.16 is: 59,707.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,894.60 : 112,374.57 = 39,793.16 : x
  2. Step 2: Convert to fraction form
    74,894.60/112,374.57 = 39,793.16/x
  3. Step 3: Cross multiply
    74,894.60x = 112,374.57 × 39,793.16
  4. Step 4: Simplify right side
    74,894.60x = 4,471,739,243.94
  5. Step 5: Solve for x
    x = 4,471,739,243.94/74,894.60
  6. Step 6: Final answer
    x = 59,707.10

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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.