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Finding the Fourth Proportional to 310,239.24, 428,170.24 and 174,273.24

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Solution

The fourth proportional to 310,239.24, 428,170.24 and 174,273.24 is: 240,519.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,239.24 : 428,170.24 = 174,273.24 : x
  2. Step 2: Convert to fraction form
    310,239.24/428,170.24 = 174,273.24/x
  3. Step 3: Cross multiply
    310,239.24x = 428,170.24 × 174,273.24
  4. Step 4: Simplify right side
    310,239.24x = 74,618,614,996.38
  5. Step 5: Solve for x
    x = 74,618,614,996.38/310,239.24
  6. Step 6: Final answer
    x = 240,519.59

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Half scale
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Double scale
Find fourth proportional to 310,240.24, 428,171.62 and 174,274.24
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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.