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Finding the Fourth Proportional to 15,554.44, 21,464.66 and 8,481

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Solution

The fourth proportional to 15,554.44, 21,464.66 and 8,481 is: 11,703.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,554.44 : 21,464.66 = 8,481 : x
  2. Step 2: Convert to fraction form
    15,554.44/21,464.66 = 8,481/x
  3. Step 3: Cross multiply
    15,554.44x = 21,464.66 × 8,481
  4. Step 4: Simplify right side
    15,554.44x = 182,041,781.46
  5. Step 5: Solve for x
    x = 182,041,781.46/15,554.44
  6. Step 6: Final answer
    x = 11,703.53

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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.