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Finding the Fourth Proportional to 166,446.68, 249,663.54 and 91,715

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Solution

The fourth proportional to 166,446.68, 249,663.54 and 91,715 is: 137,568.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,446.68 : 249,663.54 = 91,715 : x
  2. Step 2: Convert to fraction form
    166,446.68/249,663.54 = 91,715/x
  3. Step 3: Cross multiply
    166,446.68x = 249,663.54 × 91,715
  4. Step 4: Simplify right side
    166,446.68x = 22,897,891,571.10
  5. Step 5: Solve for x
    x = 22,897,891,571.10/166,446.68
  6. Step 6: Final answer
    x = 137,568.93

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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.