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Finding the Fourth Proportional to 193,387.53, 290,074.89 and 79,531.40

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Solution

The fourth proportional to 193,387.53, 290,074.89 and 79,531.40 is: 119,294.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,387.53 : 290,074.89 = 79,531.40 : x
  2. Step 2: Convert to fraction form
    193,387.53/290,074.89 = 79,531.40/x
  3. Step 3: Cross multiply
    193,387.53x = 290,074.89 × 79,531.40
  4. Step 4: Simplify right side
    193,387.53x = 23,070,062,106.55
  5. Step 5: Solve for x
    x = 23,070,062,106.55/193,387.53
  6. Step 6: Final answer
    x = 119,294.47

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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.