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Finding the Fourth Proportional to 60,509.88, 90,769.16 and 16,136.40

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Solution

The fourth proportional to 60,509.88, 90,769.16 and 16,136.40 is: 24,205.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,509.88 : 90,769.16 = 16,136.40 : x
  2. Step 2: Convert to fraction form
    60,509.88/90,769.16 = 16,136.40/x
  3. Step 3: Cross multiply
    60,509.88x = 90,769.16 × 16,136.40
  4. Step 4: Simplify right side
    60,509.88x = 1,464,687,473.42
  5. Step 5: Solve for x
    x = 1,464,687,473.42/60,509.88
  6. Step 6: Final answer
    x = 24,205.76

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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.