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Finding the Fourth Proportional to 191,813.50, 287,761.79 and 73,484.85

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Solution

The fourth proportional to 191,813.50, 287,761.79 and 73,484.85 is: 110,243.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,813.50 : 287,761.79 = 73,484.85 : x
  2. Step 2: Convert to fraction form
    191,813.50/287,761.79 = 73,484.85/x
  3. Step 3: Cross multiply
    191,813.50x = 287,761.79 × 73,484.85
  4. Step 4: Simplify right side
    191,813.50x = 21,146,131,973.88
  5. Step 5: Solve for x
    x = 21,146,131,973.88/191,813.50
  6. Step 6: Final answer
    x = 110,243.19

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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.