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Finding the Fourth Proportional to 60,595.90, 90,915.72 and 21,158.82

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Solution

The fourth proportional to 60,595.90, 90,915.72 and 21,158.82 is: 31,745.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,595.90 : 90,915.72 = 21,158.82 : x
  2. Step 2: Convert to fraction form
    60,595.90/90,915.72 = 21,158.82/x
  3. Step 3: Cross multiply
    60,595.90x = 90,915.72 × 21,158.82
  4. Step 4: Simplify right side
    60,595.90x = 1,923,669,275.30
  5. Step 5: Solve for x
    x = 1,923,669,275.30/60,595.90
  6. Step 6: Final answer
    x = 31,745.87

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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.