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Finding the Fourth Proportional to 22,508.40, 31,060.44 and 12,572.40

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Solution

The fourth proportional to 22,508.40, 31,060.44 and 12,572.40 is: 17,349.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,508.40 : 31,060.44 = 12,572.40 : x
  2. Step 2: Convert to fraction form
    22,508.40/31,060.44 = 12,572.40/x
  3. Step 3: Cross multiply
    22,508.40x = 31,060.44 × 12,572.40
  4. Step 4: Simplify right side
    22,508.40x = 390,504,275.86
  5. Step 5: Solve for x
    x = 390,504,275.86/22,508.40
  6. Step 6: Final answer
    x = 17,349.27

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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.