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Finding the Fourth Proportional to 238,665.60, 329,356.80 and 136,713.60

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Solution

The fourth proportional to 238,665.60, 329,356.80 and 136,713.60 is: 188,663.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,665.60 : 329,356.80 = 136,713.60 : x
  2. Step 2: Convert to fraction form
    238,665.60/329,356.80 = 136,713.60/x
  3. Step 3: Cross multiply
    238,665.60x = 329,356.80 × 136,713.60
  4. Step 4: Simplify right side
    238,665.60x = 45,027,553,812.48
  5. Step 5: Solve for x
    x = 45,027,553,812.48/238,665.60
  6. Step 6: Final answer
    x = 188,663.78

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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.