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Finding the Fourth Proportional to 258,900.72, 357,393.54 and 174,067

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Solution

The fourth proportional to 258,900.72, 357,393.54 and 174,067 is: 240,286.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,900.72 : 357,393.54 = 174,067 : x
  2. Step 2: Convert to fraction form
    258,900.72/357,393.54 = 174,067/x
  3. Step 3: Cross multiply
    258,900.72x = 357,393.54 × 174,067
  4. Step 4: Simplify right side
    258,900.72x = 62,210,421,327.18
  5. Step 5: Solve for x
    x = 62,210,421,327.18/258,900.72
  6. Step 6: Final answer
    x = 240,286.78

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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.