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Finding the Fourth Proportional to 22,059.23, 30,442.03 and 11,987.87

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Solution

The fourth proportional to 22,059.23, 30,442.03 and 11,987.87 is: 16,543.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,059.23 : 30,442.03 = 11,987.87 : x
  2. Step 2: Convert to fraction form
    22,059.23/30,442.03 = 11,987.87/x
  3. Step 3: Cross multiply
    22,059.23x = 30,442.03 × 11,987.87
  4. Step 4: Simplify right side
    22,059.23x = 364,934,916.00
  5. Step 5: Solve for x
    x = 364,934,916.00/22,059.23
  6. Step 6: Final answer
    x = 16,543.42

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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.