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Finding the Fourth Proportional to 19,581.20, 29,323.20 and 15,693.20

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Solution

The fourth proportional to 19,581.20, 29,323.20 and 15,693.20 is: 23,500.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,581.20 : 29,323.20 = 15,693.20 : x
  2. Step 2: Convert to fraction form
    19,581.20/29,323.20 = 15,693.20/x
  3. Step 3: Cross multiply
    19,581.20x = 29,323.20 × 15,693.20
  4. Step 4: Simplify right side
    19,581.20x = 460,174,842.24
  5. Step 5: Solve for x
    x = 460,174,842.24/19,581.20
  6. Step 6: Final answer
    x = 23,500.85

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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.