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Finding the Fourth Proportional to 79,915.65, 119,788.21 and 60,133.02

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Solution

The fourth proportional to 79,915.65, 119,788.21 and 60,133.02 is: 90,135.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,915.65 : 119,788.21 = 60,133.02 : x
  2. Step 2: Convert to fraction form
    79,915.65/119,788.21 = 60,133.02/x
  3. Step 3: Cross multiply
    79,915.65x = 119,788.21 × 60,133.02
  4. Step 4: Simplify right side
    79,915.65x = 7,203,226,827.69
  5. Step 5: Solve for x
    x = 7,203,226,827.69/79,915.65
  6. Step 6: Final answer
    x = 90,135.37

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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.