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Finding the Fourth Proportional to 15,215.47, 22,822.43 and 5,354.83

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Solution

The fourth proportional to 15,215.47, 22,822.43 and 5,354.83 is: 8,031.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215.47 : 22,822.43 = 5,354.83 : x
  2. Step 2: Convert to fraction form
    15,215.47/22,822.43 = 5,354.83/x
  3. Step 3: Cross multiply
    15,215.47x = 22,822.43 × 5,354.83
  4. Step 4: Simplify right side
    15,215.47x = 122,210,232.84
  5. Step 5: Solve for x
    x = 122,210,232.84/15,215.47
  6. Step 6: Final answer
    x = 8,031.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.