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Finding the Fourth Proportional to 15,897.29, 21,937.59 and 8,824.16

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Solution

The fourth proportional to 15,897.29, 21,937.59 and 8,824.16 is: 12,176.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,897.29 : 21,937.59 = 8,824.16 : x
  2. Step 2: Convert to fraction form
    15,897.29/21,937.59 = 8,824.16/x
  3. Step 3: Cross multiply
    15,897.29x = 21,937.59 × 8,824.16
  4. Step 4: Simplify right side
    15,897.29x = 193,580,859.02
  5. Step 5: Solve for x
    x = 193,580,859.02/15,897.29
  6. Step 6: Final answer
    x = 12,176.98

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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.