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Finding the Fourth Proportional to 15,910.66, 21,957.16 and 8,837.53

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Solution

The fourth proportional to 15,910.66, 21,957.16 and 8,837.53 is: 12,196.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,910.66 : 21,957.16 = 8,837.53 : x
  2. Step 2: Convert to fraction form
    15,910.66/21,957.16 = 8,837.53/x
  3. Step 3: Cross multiply
    15,910.66x = 21,957.16 × 8,837.53
  4. Step 4: Simplify right side
    15,910.66x = 194,047,060.21
  5. Step 5: Solve for x
    x = 194,047,060.21/15,910.66
  6. Step 6: Final answer
    x = 12,196.04

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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.