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Finding the Fourth Proportional to 154,618.64, 211,774.96 and 145,540.16

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Solution

The fourth proportional to 154,618.64, 211,774.96 and 145,540.16 is: 199,340.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,618.64 : 211,774.96 = 145,540.16 : x
  2. Step 2: Convert to fraction form
    154,618.64/211,774.96 = 145,540.16/x
  3. Step 3: Cross multiply
    154,618.64x = 211,774.96 × 145,540.16
  4. Step 4: Simplify right side
    154,618.64x = 30,821,761,562.39
  5. Step 5: Solve for x
    x = 30,821,761,562.39/154,618.64
  6. Step 6: Final answer
    x = 199,340.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.