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Finding the Fourth Proportional to 144,731.80, 217,097.70 and 127,235.80

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Solution

The fourth proportional to 144,731.80, 217,097.70 and 127,235.80 is: 190,853.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,731.80 : 217,097.70 = 127,235.80 : x
  2. Step 2: Convert to fraction form
    144,731.80/217,097.70 = 127,235.80/x
  3. Step 3: Cross multiply
    144,731.80x = 217,097.70 × 127,235.80
  4. Step 4: Simplify right side
    144,731.80x = 27,622,599,537.66
  5. Step 5: Solve for x
    x = 27,622,599,537.66/144,731.80
  6. Step 6: Final answer
    x = 190,853.70

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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.