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Finding the Fourth Proportional to 15,125.64, 22,668.74 and 7,723.86

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Solution

The fourth proportional to 15,125.64, 22,668.74 and 7,723.86 is: 11,575.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,125.64 : 22,668.74 = 7,723.86 : x
  2. Step 2: Convert to fraction form
    15,125.64/22,668.74 = 7,723.86/x
  3. Step 3: Cross multiply
    15,125.64x = 22,668.74 × 7,723.86
  4. Step 4: Simplify right side
    15,125.64x = 175,090,174.14
  5. Step 5: Solve for x
    x = 175,090,174.14/15,125.64
  6. Step 6: Final answer
    x = 11,575.72

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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.