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Finding the Fourth Proportional to 172,760.65, 238,268.72 and 145,058.38

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Solution

The fourth proportional to 172,760.65, 238,268.72 and 145,058.38 is: 200,062.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,760.65 : 238,268.72 = 145,058.38 : x
  2. Step 2: Convert to fraction form
    172,760.65/238,268.72 = 145,058.38/x
  3. Step 3: Cross multiply
    172,760.65x = 238,268.72 × 145,058.38
  4. Step 4: Simplify right side
    172,760.65x = 34,562,874,294.85
  5. Step 5: Solve for x
    x = 34,562,874,294.85/172,760.65
  6. Step 6: Final answer
    x = 200,062.19

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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.