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Finding the Fourth Proportional to 8,651.51, 12,979.14 and 4,706.71

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Solution

The fourth proportional to 8,651.51, 12,979.14 and 4,706.71 is: 7,061.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,651.51 : 12,979.14 = 4,706.71 : x
  2. Step 2: Convert to fraction form
    8,651.51/12,979.14 = 4,706.71/x
  3. Step 3: Cross multiply
    8,651.51x = 12,979.14 × 4,706.71
  4. Step 4: Simplify right side
    8,651.51x = 61,088,997.93
  5. Step 5: Solve for x
    x = 61,088,997.93/8,651.51
  6. Step 6: Final answer
    x = 7,061.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.