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Finding the Fourth Proportional to 191,633.85, 287,506.26 and 79,293.33

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Solution

The fourth proportional to 191,633.85, 287,506.26 and 79,293.33 is: 118,962.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,633.85 : 287,506.26 = 79,293.33 : x
  2. Step 2: Convert to fraction form
    191,633.85/287,506.26 = 79,293.33/x
  3. Step 3: Cross multiply
    191,633.85x = 287,506.26 × 79,293.33
  4. Step 4: Simplify right side
    191,633.85x = 22,797,328,751.25
  5. Step 5: Solve for x
    x = 22,797,328,751.25/191,633.85
  6. Step 6: Final answer
    x = 118,962.95

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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.