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Finding the Fourth Proportional to 52,861.95, 79,285.17 and 15,411.96

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Solution

The fourth proportional to 52,861.95, 79,285.17 and 15,411.96 is: 23,115.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,861.95 : 79,285.17 = 15,411.96 : x
  2. Step 2: Convert to fraction form
    52,861.95/79,285.17 = 15,411.96/x
  3. Step 3: Cross multiply
    52,861.95x = 79,285.17 × 15,411.96
  4. Step 4: Simplify right side
    52,861.95x = 1,221,939,868.63
  5. Step 5: Solve for x
    x = 1,221,939,868.63/52,861.95
  6. Step 6: Final answer
    x = 23,115.68

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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.