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Finding the Fourth Proportional to 238,817.83, 329,615.70 and 136,911.70

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Solution

The fourth proportional to 238,817.83, 329,615.70 and 136,911.70 is: 188,965.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,817.83 : 329,615.70 = 136,911.70 : x
  2. Step 2: Convert to fraction form
    238,817.83/329,615.70 = 136,911.70/x
  3. Step 3: Cross multiply
    238,817.83x = 329,615.70 × 136,911.70
  4. Step 4: Simplify right side
    238,817.83x = 45,128,245,833.69
  5. Step 5: Solve for x
    x = 45,128,245,833.69/238,817.83
  6. Step 6: Final answer
    x = 188,965.14

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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.