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Finding the Fourth Proportional to 7,718.93, 10,651.49 and 4,531.88

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Solution

The fourth proportional to 7,718.93, 10,651.49 and 4,531.88 is: 6,253.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.93 : 10,651.49 = 4,531.88 : x
  2. Step 2: Convert to fraction form
    7,718.93/10,651.49 = 4,531.88/x
  3. Step 3: Cross multiply
    7,718.93x = 10,651.49 × 4,531.88
  4. Step 4: Simplify right side
    7,718.93x = 48,271,274.50
  5. Step 5: Solve for x
    x = 48,271,274.50/7,718.93
  6. Step 6: Final answer
    x = 6,253.62

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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.