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Finding the Fourth Proportional to 15,644.52, 21,592.20 and 9,356.88

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Solution

The fourth proportional to 15,644.52, 21,592.20 and 9,356.88 is: 12,914.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,644.52 : 21,592.20 = 9,356.88 : x
  2. Step 2: Convert to fraction form
    15,644.52/21,592.20 = 9,356.88/x
  3. Step 3: Cross multiply
    15,644.52x = 21,592.20 × 9,356.88
  4. Step 4: Simplify right side
    15,644.52x = 202,035,624.34
  5. Step 5: Solve for x
    x = 202,035,624.34/15,644.52
  6. Step 6: Final answer
    x = 12,914.15

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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.