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Finding the Fourth Proportional to 8,881.16, 12,251.94 and 5,153

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Solution

The fourth proportional to 8,881.16, 12,251.94 and 5,153 is: 7,108.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,881.16 : 12,251.94 = 5,153 : x
  2. Step 2: Convert to fraction form
    8,881.16/12,251.94 = 5,153/x
  3. Step 3: Cross multiply
    8,881.16x = 12,251.94 × 5,153
  4. Step 4: Simplify right side
    8,881.16x = 63,134,246.82
  5. Step 5: Solve for x
    x = 63,134,246.82/8,881.16
  6. Step 6: Final answer
    x = 7,108.78

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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.