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Finding the Fourth Proportional to 238,695.72, 329,306.86 and 136,666.65

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Solution

The fourth proportional to 238,695.72, 329,306.86 and 136,666.65 is: 188,546.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,695.72 : 329,306.86 = 136,666.65 : x
  2. Step 2: Convert to fraction form
    238,695.72/329,306.86 = 136,666.65/x
  3. Step 3: Cross multiply
    238,695.72x = 329,306.86 × 136,666.65
  4. Step 4: Simplify right side
    238,695.72x = 45,005,265,378.22
  5. Step 5: Solve for x
    x = 45,005,265,378.22/238,695.72
  6. Step 6: Final answer
    x = 188,546.60

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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.