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Finding the Fourth Proportional to 52,636.62, 78,931.47 and 15,187.79

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Solution

The fourth proportional to 52,636.62, 78,931.47 and 15,187.79 is: 22,774.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,636.62 : 78,931.47 = 15,187.79 : x
  2. Step 2: Convert to fraction form
    52,636.62/78,931.47 = 15,187.79/x
  3. Step 3: Cross multiply
    52,636.62x = 78,931.47 × 15,187.79
  4. Step 4: Simplify right side
    52,636.62x = 1,198,794,590.75
  5. Step 5: Solve for x
    x = 1,198,794,590.75/52,636.62
  6. Step 6: Final answer
    x = 22,774.92

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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.