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Finding the Fourth Proportional to 60,571.72, 90,868.92 and 19,009

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Solution

The fourth proportional to 60,571.72, 90,868.92 and 19,009 is: 28,517.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,571.72 : 90,868.92 = 19,009 : x
  2. Step 2: Convert to fraction form
    60,571.72/90,868.92 = 19,009/x
  3. Step 3: Cross multiply
    60,571.72x = 90,868.92 × 19,009
  4. Step 4: Simplify right side
    60,571.72x = 1,727,327,300.28
  5. Step 5: Solve for x
    x = 1,727,327,300.28/60,571.72
  6. Step 6: Final answer
    x = 28,517.06

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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.