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Finding the Fourth Proportional to 52,865.76, 79,298.64 and 13,423.08

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Solution

The fourth proportional to 52,865.76, 79,298.64 and 13,423.08 is: 20,134.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,865.76 : 79,298.64 = 13,423.08 : x
  2. Step 2: Convert to fraction form
    52,865.76/79,298.64 = 13,423.08/x
  3. Step 3: Cross multiply
    52,865.76x = 79,298.64 × 13,423.08
  4. Step 4: Simplify right side
    52,865.76x = 1,064,431,988.61
  5. Step 5: Solve for x
    x = 1,064,431,988.61/52,865.76
  6. Step 6: Final answer
    x = 20,134.62

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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.