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Finding the Fourth Proportional to 186,526.50, 279,731.42 and 81,239.46

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Solution

The fourth proportional to 186,526.50, 279,731.42 and 81,239.46 is: 121,833.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,526.50 : 279,731.42 = 81,239.46 : x
  2. Step 2: Convert to fraction form
    186,526.50/279,731.42 = 81,239.46/x
  3. Step 3: Cross multiply
    186,526.50x = 279,731.42 × 81,239.46
  4. Step 4: Simplify right side
    186,526.50x = 22,725,229,505.83
  5. Step 5: Solve for x
    x = 22,725,229,505.83/186,526.50
  6. Step 6: Final answer
    x = 121,833.79

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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.