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Finding the Fourth Proportional to 5,666.74, 7,819.65 and 3,148.81

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Solution

The fourth proportional to 5,666.74, 7,819.65 and 3,148.81 is: 4,345.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,666.74 : 7,819.65 = 3,148.81 : x
  2. Step 2: Convert to fraction form
    5,666.74/7,819.65 = 3,148.81/x
  3. Step 3: Cross multiply
    5,666.74x = 7,819.65 × 3,148.81
  4. Step 4: Simplify right side
    5,666.74x = 24,622,572.57
  5. Step 5: Solve for x
    x = 24,622,572.57/5,666.74
  6. Step 6: Final answer
    x = 4,345.11

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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.