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Finding the Fourth Proportional to 391,199.00, 539,938.67 and 238,287.60

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Solution

The fourth proportional to 391,199.00, 539,938.67 and 238,287.60 is: 328,888.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,199.00 : 539,938.67 = 238,287.60 : x
  2. Step 2: Convert to fraction form
    391,199.00/539,938.67 = 238,287.60/x
  3. Step 3: Cross multiply
    391,199.00x = 539,938.67 × 238,287.60
  4. Step 4: Simplify right side
    391,199.00x = 128,660,688,630.05
  5. Step 5: Solve for x
    x = 128,660,688,630.05/391,199.00
  6. Step 6: Final answer
    x = 328,888.09

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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.