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Finding the Fourth Proportional to 11,425.59, 15,768.07 and 6,949.53

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Solution

The fourth proportional to 11,425.59, 15,768.07 and 6,949.53 is: 9,590.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,425.59 : 15,768.07 = 6,949.53 : x
  2. Step 2: Convert to fraction form
    11,425.59/15,768.07 = 6,949.53/x
  3. Step 3: Cross multiply
    11,425.59x = 15,768.07 × 6,949.53
  4. Step 4: Simplify right side
    11,425.59x = 109,580,658.13
  5. Step 5: Solve for x
    x = 109,580,658.13/11,425.59
  6. Step 6: Final answer
    x = 9,590.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.