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Finding the Fourth Proportional to 191,352.85, 287,034 and 91,523.59

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Solution

The fourth proportional to 191,352.85, 287,034 and 91,523.59 is: 137,287.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,352.85 : 287,034 = 91,523.59 : x
  2. Step 2: Convert to fraction form
    191,352.85/287,034 = 91,523.59/x
  3. Step 3: Cross multiply
    191,352.85x = 287,034 × 91,523.59
  4. Step 4: Simplify right side
    191,352.85x = 26,270,382,132.06
  5. Step 5: Solve for x
    x = 26,270,382,132.06/191,352.85
  6. Step 6: Final answer
    x = 137,287.64

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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.