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Finding the Fourth Proportional to 2,993.65, 4,130.74 and 1,667.32

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Solution

The fourth proportional to 2,993.65, 4,130.74 and 1,667.32 is: 2,300.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,993.65 : 4,130.74 = 1,667.32 : x
  2. Step 2: Convert to fraction form
    2,993.65/4,130.74 = 1,667.32/x
  3. Step 3: Cross multiply
    2,993.65x = 4,130.74 × 1,667.32
  4. Step 4: Simplify right side
    2,993.65x = 6,887,265.42
  5. Step 5: Solve for x
    x = 6,887,265.42/2,993.65
  6. Step 6: Final answer
    x = 2,300.62

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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.