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Finding the Fourth Proportional to 88,709.80, 133,064.70 and 60,716.20

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Solution

The fourth proportional to 88,709.80, 133,064.70 and 60,716.20 is: 91,074.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,709.80 : 133,064.70 = 60,716.20 : x
  2. Step 2: Convert to fraction form
    88,709.80/133,064.70 = 60,716.20/x
  3. Step 3: Cross multiply
    88,709.80x = 133,064.70 × 60,716.20
  4. Step 4: Simplify right side
    88,709.80x = 8,079,182,938.14
  5. Step 5: Solve for x
    x = 8,079,182,938.14/88,709.80
  6. Step 6: Final answer
    x = 91,074.30

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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.