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Finding the Fourth Proportional to 2,913.98, 4,019.58 and 2,016.32

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Solution

The fourth proportional to 2,913.98, 4,019.58 and 2,016.32 is: 2,781.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.98 : 4,019.58 = 2,016.32 : x
  2. Step 2: Convert to fraction form
    2,913.98/4,019.58 = 2,016.32/x
  3. Step 3: Cross multiply
    2,913.98x = 4,019.58 × 2,016.32
  4. Step 4: Simplify right side
    2,913.98x = 8,104,739.45
  5. Step 5: Solve for x
    x = 8,104,739.45/2,913.98
  6. Step 6: Final answer
    x = 2,781.33

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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.