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Finding the Fourth Proportional to 60,157.40, 90,229.14 and 15,787.60

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Solution

The fourth proportional to 60,157.40, 90,229.14 and 15,787.60 is: 23,679.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,157.40 : 90,229.14 = 15,787.60 : x
  2. Step 2: Convert to fraction form
    60,157.40/90,229.14 = 15,787.60/x
  3. Step 3: Cross multiply
    60,157.40x = 90,229.14 × 15,787.60
  4. Step 4: Simplify right side
    60,157.40x = 1,424,501,345.09
  5. Step 5: Solve for x
    x = 1,424,501,345.09/60,157.40
  6. Step 6: Final answer
    x = 23,679.57

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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.