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Finding the Fourth Proportional to 319,171.68, 439,860.24 and 238,456.80

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Solution

The fourth proportional to 319,171.68, 439,860.24 and 238,456.80 is: 328,624.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,171.68 : 439,860.24 = 238,456.80 : x
  2. Step 2: Convert to fraction form
    319,171.68/439,860.24 = 238,456.80/x
  3. Step 3: Cross multiply
    319,171.68x = 439,860.24 × 238,456.80
  4. Step 4: Simplify right side
    319,171.68x = 104,887,665,277.63
  5. Step 5: Solve for x
    x = 104,887,665,277.63/319,171.68
  6. Step 6: Final answer
    x = 328,624.60

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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.