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Finding the Fourth Proportional to 52,689.65, 79,090.17 and 51,499.79

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Solution

The fourth proportional to 52,689.65, 79,090.17 and 51,499.79 is: 77,304.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,689.65 : 79,090.17 = 51,499.79 : x
  2. Step 2: Convert to fraction form
    52,689.65/79,090.17 = 51,499.79/x
  3. Step 3: Cross multiply
    52,689.65x = 79,090.17 × 51,499.79
  4. Step 4: Simplify right side
    52,689.65x = 4,073,127,146.06
  5. Step 5: Solve for x
    x = 4,073,127,146.06/52,689.65
  6. Step 6: Final answer
    x = 77,304.12

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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.