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Finding the Fourth Proportional to 238,642.54, 357,939.20 and 80,866.89

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Solution

The fourth proportional to 238,642.54, 357,939.20 and 80,866.89 is: 121,292.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,642.54 : 357,939.20 = 80,866.89 : x
  2. Step 2: Convert to fraction form
    238,642.54/357,939.20 = 80,866.89/x
  3. Step 3: Cross multiply
    238,642.54x = 357,939.20 × 80,866.89
  4. Step 4: Simplify right side
    238,642.54x = 28,945,430,115.26
  5. Step 5: Solve for x
    x = 28,945,430,115.26/238,642.54
  6. Step 6: Final answer
    x = 121,292.00

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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.