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Finding the Fourth Proportional to 40,569.12, 55,978.56 and 22,663.44

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Solution

The fourth proportional to 40,569.12, 55,978.56 and 22,663.44 is: 31,271.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,569.12 : 55,978.56 = 22,663.44 : x
  2. Step 2: Convert to fraction form
    40,569.12/55,978.56 = 22,663.44/x
  3. Step 3: Cross multiply
    40,569.12x = 55,978.56 × 22,663.44
  4. Step 4: Simplify right side
    40,569.12x = 1,268,666,735.85
  5. Step 5: Solve for x
    x = 1,268,666,735.85/40,569.12
  6. Step 6: Final answer
    x = 31,271.73

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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.