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Finding the Fourth Proportional to 8,641.88, 11,925.87 and 4,864.31

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Solution

The fourth proportional to 8,641.88, 11,925.87 and 4,864.31 is: 6,712.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.88 : 11,925.87 = 4,864.31 : x
  2. Step 2: Convert to fraction form
    8,641.88/11,925.87 = 4,864.31/x
  3. Step 3: Cross multiply
    8,641.88x = 11,925.87 × 4,864.31
  4. Step 4: Simplify right side
    8,641.88x = 58,011,170.14
  5. Step 5: Solve for x
    x = 58,011,170.14/8,641.88
  6. Step 6: Final answer
    x = 6,712.80

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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.