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Finding the Fourth Proportional to 8,701.50, 12,007.62 and 4,722.51

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Solution

The fourth proportional to 8,701.50, 12,007.62 and 4,722.51 is: 6,516.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,701.50 : 12,007.62 = 4,722.51 : x
  2. Step 2: Convert to fraction form
    8,701.50/12,007.62 = 4,722.51/x
  3. Step 3: Cross multiply
    8,701.50x = 12,007.62 × 4,722.51
  4. Step 4: Simplify right side
    8,701.50x = 56,706,105.53
  5. Step 5: Solve for x
    x = 56,706,105.53/8,701.50
  6. Step 6: Final answer
    x = 6,516.82

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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.