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Finding the Fourth Proportional to 19,344.60, 29,020.95 and 7,657.92

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Solution

The fourth proportional to 19,344.60, 29,020.95 and 7,657.92 is: 11,488.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,344.60 : 29,020.95 = 7,657.92 : x
  2. Step 2: Convert to fraction form
    19,344.60/29,020.95 = 7,657.92/x
  3. Step 3: Cross multiply
    19,344.60x = 29,020.95 × 7,657.92
  4. Step 4: Simplify right side
    19,344.60x = 222,240,113.42
  5. Step 5: Solve for x
    x = 222,240,113.42/19,344.60
  6. Step 6: Final answer
    x = 11,488.48

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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.