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Finding the Fourth Proportional to 238,864.85, 329,595.85 and 136,870.70

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Solution

The fourth proportional to 238,864.85, 329,595.85 and 136,870.70 is: 188,859.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,864.85 : 329,595.85 = 136,870.70 : x
  2. Step 2: Convert to fraction form
    238,864.85/329,595.85 = 136,870.70/x
  3. Step 3: Cross multiply
    238,864.85x = 329,595.85 × 136,870.70
  4. Step 4: Simplify right side
    238,864.85x = 45,112,012,716.44
  5. Step 5: Solve for x
    x = 45,112,012,716.44/238,864.85
  6. Step 6: Final answer
    x = 188,859.99

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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.