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Finding the Fourth Proportional to 186,040.80, 279,061.20 and 169,711.20

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Solution

The fourth proportional to 186,040.80, 279,061.20 and 169,711.20 is: 254,566.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,040.80 : 279,061.20 = 169,711.20 : x
  2. Step 2: Convert to fraction form
    186,040.80/279,061.20 = 169,711.20/x
  3. Step 3: Cross multiply
    186,040.80x = 279,061.20 × 169,711.20
  4. Step 4: Simplify right side
    186,040.80x = 47,359,811,125.44
  5. Step 5: Solve for x
    x = 47,359,811,125.44/186,040.80
  6. Step 6: Final answer
    x = 254,566.80

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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.