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Finding the Fourth Proportional to 94,689.81, 141,769.54 and 71,332.65

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Solution

The fourth proportional to 94,689.81, 141,769.54 and 71,332.65 is: 106,799.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,689.81 : 141,769.54 = 71,332.65 : x
  2. Step 2: Convert to fraction form
    94,689.81/141,769.54 = 71,332.65/x
  3. Step 3: Cross multiply
    94,689.81x = 141,769.54 × 71,332.65
  4. Step 4: Simplify right side
    94,689.81x = 10,112,797,066.65
  5. Step 5: Solve for x
    x = 10,112,797,066.65/94,689.81
  6. Step 6: Final answer
    x = 106,799.21

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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.