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Finding the Fourth Proportional to 19,299.66, 28,948.37 and 7,451.12

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Solution

The fourth proportional to 19,299.66, 28,948.37 and 7,451.12 is: 11,176.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,299.66 : 28,948.37 = 7,451.12 : x
  2. Step 2: Convert to fraction form
    19,299.66/28,948.37 = 7,451.12/x
  3. Step 3: Cross multiply
    19,299.66x = 28,948.37 × 7,451.12
  4. Step 4: Simplify right side
    19,299.66x = 215,697,778.67
  5. Step 5: Solve for x
    x = 215,697,778.67/19,299.66
  6. Step 6: Final answer
    x = 11,176.25

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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.