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Finding the Fourth Proportional to 8,746.75, 12,072.18 and 5,020.75

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Solution

The fourth proportional to 8,746.75, 12,072.18 and 5,020.75 is: 6,929.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,746.75 : 12,072.18 = 5,020.75 : x
  2. Step 2: Convert to fraction form
    8,746.75/12,072.18 = 5,020.75/x
  3. Step 3: Cross multiply
    8,746.75x = 12,072.18 × 5,020.75
  4. Step 4: Simplify right side
    8,746.75x = 60,611,397.74
  5. Step 5: Solve for x
    x = 60,611,397.74/8,746.75
  6. Step 6: Final answer
    x = 6,929.59

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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.