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Finding the Fourth Proportional to 19,751.32, 29,626.98 and 19,313.92

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Solution

The fourth proportional to 19,751.32, 29,626.98 and 19,313.92 is: 28,970.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,751.32 : 29,626.98 = 19,313.92 : x
  2. Step 2: Convert to fraction form
    19,751.32/29,626.98 = 19,313.92/x
  3. Step 3: Cross multiply
    19,751.32x = 29,626.98 × 19,313.92
  4. Step 4: Simplify right side
    19,751.32x = 572,213,121.56
  5. Step 5: Solve for x
    x = 572,213,121.56/19,751.32
  6. Step 6: Final answer
    x = 28,970.88

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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.