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Finding the Fourth Proportional to 258,781.77, 357,115.19 and 145,604.25

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Solution

The fourth proportional to 258,781.77, 357,115.19 and 145,604.25 is: 200,931.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,781.77 : 357,115.19 = 145,604.25 : x
  2. Step 2: Convert to fraction form
    258,781.77/357,115.19 = 145,604.25/x
  3. Step 3: Cross multiply
    258,781.77x = 357,115.19 × 145,604.25
  4. Step 4: Simplify right side
    258,781.77x = 51,997,488,675.54
  5. Step 5: Solve for x
    x = 51,997,488,675.54/258,781.77
  6. Step 6: Final answer
    x = 200,931.81

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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.