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Finding the Fourth Proportional to 8,725.74, 12,041.64 and 4,747.02

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Solution

The fourth proportional to 8,725.74, 12,041.64 and 4,747.02 is: 6,550.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,725.74 : 12,041.64 = 4,747.02 : x
  2. Step 2: Convert to fraction form
    8,725.74/12,041.64 = 4,747.02/x
  3. Step 3: Cross multiply
    8,725.74x = 12,041.64 × 4,747.02
  4. Step 4: Simplify right side
    8,725.74x = 57,161,905.91
  5. Step 5: Solve for x
    x = 57,161,905.91/8,725.74
  6. Step 6: Final answer
    x = 6,550.95

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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.