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Finding the Fourth Proportional to 2,742.16, 4,113.60 and 794.32

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Solution

The fourth proportional to 2,742.16, 4,113.60 and 794.32 is: 1,191.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.16 : 4,113.60 = 794.32 : x
  2. Step 2: Convert to fraction form
    2,742.16/4,113.60 = 794.32/x
  3. Step 3: Cross multiply
    2,742.16x = 4,113.60 × 794.32
  4. Step 4: Simplify right side
    2,742.16x = 3,267,514.75
  5. Step 5: Solve for x
    x = 3,267,514.75/2,742.16
  6. Step 6: Final answer
    x = 1,191.58

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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.