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Finding the Fourth Proportional to 40,991.28, 61,474.76 and 17,612.28

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Solution

The fourth proportional to 40,991.28, 61,474.76 and 17,612.28 is: 26,413.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,991.28 : 61,474.76 = 17,612.28 : x
  2. Step 2: Convert to fraction form
    40,991.28/61,474.76 = 17,612.28/x
  3. Step 3: Cross multiply
    40,991.28x = 61,474.76 × 17,612.28
  4. Step 4: Simplify right side
    40,991.28x = 1,082,710,686.05
  5. Step 5: Solve for x
    x = 1,082,710,686.05/40,991.28
  6. Step 6: Final answer
    x = 26,413.20

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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.