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Finding the Fourth Proportional to 8,993.80, 12,410.80 and 5,015.14

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Solution

The fourth proportional to 8,993.80, 12,410.80 and 5,015.14 is: 6,920.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,993.80 : 12,410.80 = 5,015.14 : x
  2. Step 2: Convert to fraction form
    8,993.80/12,410.80 = 5,015.14/x
  3. Step 3: Cross multiply
    8,993.80x = 12,410.80 × 5,015.14
  4. Step 4: Simplify right side
    8,993.80x = 62,241,899.51
  5. Step 5: Solve for x
    x = 62,241,899.51/8,993.80
  6. Step 6: Final answer
    x = 6,920.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.