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Finding the Fourth Proportional to 74,063.61, 111,095.42 and 40,766.54

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Solution

The fourth proportional to 74,063.61, 111,095.42 and 40,766.54 is: 61,149.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,063.61 : 111,095.42 = 40,766.54 : x
  2. Step 2: Convert to fraction form
    74,063.61/111,095.42 = 40,766.54/x
  3. Step 3: Cross multiply
    74,063.61x = 111,095.42 × 40,766.54
  4. Step 4: Simplify right side
    74,063.61x = 4,528,975,123.94
  5. Step 5: Solve for x
    x = 4,528,975,123.94/74,063.61
  6. Step 6: Final answer
    x = 61,149.80

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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.