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Finding the Fourth Proportional to 52,860.81, 79,282.78 and 15,412.13

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Solution

The fourth proportional to 52,860.81, 79,282.78 and 15,412.13 is: 23,115.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,860.81 : 79,282.78 = 15,412.13 : x
  2. Step 2: Convert to fraction form
    52,860.81/79,282.78 = 15,412.13/x
  3. Step 3: Cross multiply
    52,860.81x = 79,282.78 × 15,412.13
  4. Step 4: Simplify right side
    52,860.81x = 1,221,916,236.85
  5. Step 5: Solve for x
    x = 1,221,916,236.85/52,860.81
  6. Step 6: Final answer
    x = 23,115.73

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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.