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Finding the Fourth Proportional to 19,168.56, 28,752.99 and 6,688.53

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Solution

The fourth proportional to 19,168.56, 28,752.99 and 6,688.53 is: 10,032.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,168.56 : 28,752.99 = 6,688.53 : x
  2. Step 2: Convert to fraction form
    19,168.56/28,752.99 = 6,688.53/x
  3. Step 3: Cross multiply
    19,168.56x = 28,752.99 × 6,688.53
  4. Step 4: Simplify right side
    19,168.56x = 192,315,236.20
  5. Step 5: Solve for x
    x = 192,315,236.20/19,168.56
  6. Step 6: Final answer
    x = 10,032.85

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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.