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Finding the Fourth Proportional to 74,957.76, 112,399.92 and 25,020.72

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Solution

The fourth proportional to 74,957.76, 112,399.92 and 25,020.72 is: 37,518.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,957.76 : 112,399.92 = 25,020.72 : x
  2. Step 2: Convert to fraction form
    74,957.76/112,399.92 = 25,020.72/x
  3. Step 3: Cross multiply
    74,957.76x = 112,399.92 × 25,020.72
  4. Step 4: Simplify right side
    74,957.76x = 2,812,326,926.34
  5. Step 5: Solve for x
    x = 2,812,326,926.34/74,957.76
  6. Step 6: Final answer
    x = 37,518.82

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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.