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Finding the Fourth Proportional to 207,254.20, 310,881.30 and 74,198.20

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Solution

The fourth proportional to 207,254.20, 310,881.30 and 74,198.20 is: 111,297.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,254.20 : 310,881.30 = 74,198.20 : x
  2. Step 2: Convert to fraction form
    207,254.20/310,881.30 = 74,198.20/x
  3. Step 3: Cross multiply
    207,254.20x = 310,881.30 × 74,198.20
  4. Step 4: Simplify right side
    207,254.20x = 23,066,832,873.66
  5. Step 5: Solve for x
    x = 23,066,832,873.66/207,254.20
  6. Step 6: Final answer
    x = 111,297.30

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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.