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Finding the Fourth Proportional to 8,943.12, 12,349.08 and 6,296.40

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Solution

The fourth proportional to 8,943.12, 12,349.08 and 6,296.40 is: 8,694.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,943.12 : 12,349.08 = 6,296.40 : x
  2. Step 2: Convert to fraction form
    8,943.12/12,349.08 = 6,296.40/x
  3. Step 3: Cross multiply
    8,943.12x = 12,349.08 × 6,296.40
  4. Step 4: Simplify right side
    8,943.12x = 77,754,747.31
  5. Step 5: Solve for x
    x = 77,754,747.31/8,943.12
  6. Step 6: Final answer
    x = 8,694.36

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1.5x scale

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.