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Finding the Fourth Proportional to 12,404.80, 18,592.80 and 5,005.60

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Solution

The fourth proportional to 12,404.80, 18,592.80 and 5,005.60 is: 7,502.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,404.80 : 18,592.80 = 5,005.60 : x
  2. Step 2: Convert to fraction form
    12,404.80/18,592.80 = 5,005.60/x
  3. Step 3: Cross multiply
    12,404.80x = 18,592.80 × 5,005.60
  4. Step 4: Simplify right side
    12,404.80x = 93,068,119.68
  5. Step 5: Solve for x
    x = 93,068,119.68/12,404.80
  6. Step 6: Final answer
    x = 7,502.59

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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.