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Finding the Fourth Proportional to 52,491.64, 78,721.31 and 15,041.68

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Solution

The fourth proportional to 52,491.64, 78,721.31 and 15,041.68 is: 22,557.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,491.64 : 78,721.31 = 15,041.68 : x
  2. Step 2: Convert to fraction form
    52,491.64/78,721.31 = 15,041.68/x
  3. Step 3: Cross multiply
    52,491.64x = 78,721.31 × 15,041.68
  4. Step 4: Simplify right side
    52,491.64x = 1,184,100,754.20
  5. Step 5: Solve for x
    x = 1,184,100,754.20/52,491.64
  6. Step 6: Final answer
    x = 22,557.89

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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.