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Finding the Fourth Proportional to 74,718.65, 112,016.90 and 34,762.55

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Solution

The fourth proportional to 74,718.65, 112,016.90 and 34,762.55 is: 52,115.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,718.65 : 112,016.90 = 34,762.55 : x
  2. Step 2: Convert to fraction form
    74,718.65/112,016.90 = 34,762.55/x
  3. Step 3: Cross multiply
    74,718.65x = 112,016.90 × 34,762.55
  4. Step 4: Simplify right side
    74,718.65x = 3,893,992,613.92
  5. Step 5: Solve for x
    x = 3,893,992,613.92/74,718.65
  6. Step 6: Final answer
    x = 52,115.40

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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.