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Finding the Fourth Proportional to 153,945.60, 230,918.40 and 136,838.40

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Solution

The fourth proportional to 153,945.60, 230,918.40 and 136,838.40 is: 205,257.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,945.60 : 230,918.40 = 136,838.40 : x
  2. Step 2: Convert to fraction form
    153,945.60/230,918.40 = 136,838.40/x
  3. Step 3: Cross multiply
    153,945.60x = 230,918.40 × 136,838.40
  4. Step 4: Simplify right side
    153,945.60x = 31,598,504,386.56
  5. Step 5: Solve for x
    x = 31,598,504,386.56/153,945.60
  6. Step 6: Final answer
    x = 205,257.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.