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Finding the Fourth Proportional to 191,618.38, 287,302.41 and 91,775.38

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Solution

The fourth proportional to 191,618.38, 287,302.41 and 91,775.38 is: 137,603.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,618.38 : 287,302.41 = 91,775.38 : x
  2. Step 2: Convert to fraction form
    191,618.38/287,302.41 = 91,775.38/x
  3. Step 3: Cross multiply
    191,618.38x = 287,302.41 × 91,775.38
  4. Step 4: Simplify right side
    191,618.38x = 26,367,287,852.67
  5. Step 5: Solve for x
    x = 26,367,287,852.67/191,618.38
  6. Step 6: Final answer
    x = 137,603.12

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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.