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Finding the Fourth Proportional to 6,988.71, 10,483.20 and 3,039.99

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Solution

The fourth proportional to 6,988.71, 10,483.20 and 3,039.99 is: 4,560.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,988.71 : 10,483.20 = 3,039.99 : x
  2. Step 2: Convert to fraction form
    6,988.71/10,483.20 = 3,039.99/x
  3. Step 3: Cross multiply
    6,988.71x = 10,483.20 × 3,039.99
  4. Step 4: Simplify right side
    6,988.71x = 31,868,823.17
  5. Step 5: Solve for x
    x = 31,868,823.17/6,988.71
  6. Step 6: Final answer
    x = 4,560.04

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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.