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Finding the Fourth Proportional to 123,492.60, 185,042.02 and 79,082.80

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Solution

The fourth proportional to 123,492.60, 185,042.02 and 79,082.80 is: 118,498.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,492.60 : 185,042.02 = 79,082.80 : x
  2. Step 2: Convert to fraction form
    123,492.60/185,042.02 = 79,082.80/x
  3. Step 3: Cross multiply
    123,492.60x = 185,042.02 × 79,082.80
  4. Step 4: Simplify right side
    123,492.60x = 14,633,641,059.26
  5. Step 5: Solve for x
    x = 14,633,641,059.26/123,492.60
  6. Step 6: Final answer
    x = 118,498.12

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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.