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Finding the Fourth Proportional to 5,054.40, 7,581.60 and 5,005.80

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Solution

The fourth proportional to 5,054.40, 7,581.60 and 5,005.80 is: 7,508.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,054.40 : 7,581.60 = 5,005.80 : x
  2. Step 2: Convert to fraction form
    5,054.40/7,581.60 = 5,005.80/x
  3. Step 3: Cross multiply
    5,054.40x = 7,581.60 × 5,005.80
  4. Step 4: Simplify right side
    5,054.40x = 37,951,973.28
  5. Step 5: Solve for x
    x = 37,951,973.28/5,054.40
  6. Step 6: Final answer
    x = 7,508.70

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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.