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Finding the Fourth Proportional to 8,398.92, 11,590.56 and 4,672.92

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Solution

The fourth proportional to 8,398.92, 11,590.56 and 4,672.92 is: 6,448.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,398.92 : 11,590.56 = 4,672.92 : x
  2. Step 2: Convert to fraction form
    8,398.92/11,590.56 = 4,672.92/x
  3. Step 3: Cross multiply
    8,398.92x = 11,590.56 × 4,672.92
  4. Step 4: Simplify right side
    8,398.92x = 54,161,759.64
  5. Step 5: Solve for x
    x = 54,161,759.64/8,398.92
  6. Step 6: Final answer
    x = 6,448.66

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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.