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Finding the Fourth Proportional to 15,832.31, 21,848.71 and 8,759.18

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Solution

The fourth proportional to 15,832.31, 21,848.71 and 8,759.18 is: 12,087.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,832.31 : 21,848.71 = 8,759.18 : x
  2. Step 2: Convert to fraction form
    15,832.31/21,848.71 = 8,759.18/x
  3. Step 3: Cross multiply
    15,832.31x = 21,848.71 × 8,759.18
  4. Step 4: Simplify right side
    15,832.31x = 191,376,816.38
  5. Step 5: Solve for x
    x = 191,376,816.38/15,832.31
  6. Step 6: Final answer
    x = 12,087.74

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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.