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Finding the Fourth Proportional to 61,822.72, 92,751.36 and 20,298.88

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Solution

The fourth proportional to 61,822.72, 92,751.36 and 20,298.88 is: 30,453.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,822.72 : 92,751.36 = 20,298.88 : x
  2. Step 2: Convert to fraction form
    61,822.72/92,751.36 = 20,298.88/x
  3. Step 3: Cross multiply
    61,822.72x = 92,751.36 × 20,298.88
  4. Step 4: Simplify right side
    61,822.72x = 1,882,748,726.48
  5. Step 5: Solve for x
    x = 1,882,748,726.48/61,822.72
  6. Step 6: Final answer
    x = 30,453.99

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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.