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Finding the Fourth Proportional to 15,925.92, 21,977.28 and 8,852.16

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Solution

The fourth proportional to 15,925.92, 21,977.28 and 8,852.16 is: 12,215.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,925.92 : 21,977.28 = 8,852.16 : x
  2. Step 2: Convert to fraction form
    15,925.92/21,977.28 = 8,852.16/x
  3. Step 3: Cross multiply
    15,925.92x = 21,977.28 × 8,852.16
  4. Step 4: Simplify right side
    15,925.92x = 194,546,398.92
  5. Step 5: Solve for x
    x = 194,546,398.92/15,925.92
  6. Step 6: Final answer
    x = 12,215.71

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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.