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Finding the Fourth Proportional to 8,661.74, 11,953.82 and 4,885.24

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Solution

The fourth proportional to 8,661.74, 11,953.82 and 4,885.24 is: 6,741.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,661.74 : 11,953.82 = 4,885.24 : x
  2. Step 2: Convert to fraction form
    8,661.74/11,953.82 = 4,885.24/x
  3. Step 3: Cross multiply
    8,661.74x = 11,953.82 × 4,885.24
  4. Step 4: Simplify right side
    8,661.74x = 58,397,279.62
  5. Step 5: Solve for x
    x = 58,397,279.62/8,661.74
  6. Step 6: Final answer
    x = 6,741.98

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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.