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Finding the Fourth Proportional to 8,872.76, 12,244.74 and 4,894.40

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Solution

The fourth proportional to 8,872.76, 12,244.74 and 4,894.40 is: 6,754.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,872.76 : 12,244.74 = 4,894.40 : x
  2. Step 2: Convert to fraction form
    8,872.76/12,244.74 = 4,894.40/x
  3. Step 3: Cross multiply
    8,872.76x = 12,244.74 × 4,894.40
  4. Step 4: Simplify right side
    8,872.76x = 59,930,655.46
  5. Step 5: Solve for x
    x = 59,930,655.46/8,872.76
  6. Step 6: Final answer
    x = 6,754.45

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Double scale
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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.