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Finding the Fourth Proportional to 91,866.61, 137,559.34 and 60,176.98

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Solution

The fourth proportional to 91,866.61, 137,559.34 and 60,176.98 is: 90,107.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,866.61 : 137,559.34 = 60,176.98 : x
  2. Step 2: Convert to fraction form
    91,866.61/137,559.34 = 60,176.98/x
  3. Step 3: Cross multiply
    91,866.61x = 137,559.34 × 60,176.98
  4. Step 4: Simplify right side
    91,866.61x = 8,277,905,651.99
  5. Step 5: Solve for x
    x = 8,277,905,651.99/91,866.61
  6. Step 6: Final answer
    x = 90,107.88

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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.