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Finding the Fourth Proportional to 62,407.87, 93,611.80 and 20,291.72

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Solution

The fourth proportional to 62,407.87, 93,611.80 and 20,291.72 is: 30,437.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,407.87 : 93,611.80 = 20,291.72 : x
  2. Step 2: Convert to fraction form
    62,407.87/93,611.80 = 20,291.72/x
  3. Step 3: Cross multiply
    62,407.87x = 93,611.80 × 20,291.72
  4. Step 4: Simplify right side
    62,407.87x = 1,899,543,991.60
  5. Step 5: Solve for x
    x = 1,899,543,991.60/62,407.87
  6. Step 6: Final answer
    x = 30,437.57

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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.