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Finding the Fourth Proportional to 191,472.56, 287,340.04 and 66,813.56

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Solution

The fourth proportional to 191,472.56, 287,340.04 and 66,813.56 is: 100,266.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,472.56 : 287,340.04 = 66,813.56 : x
  2. Step 2: Convert to fraction form
    191,472.56/287,340.04 = 66,813.56/x
  3. Step 3: Cross multiply
    191,472.56x = 287,340.04 × 66,813.56
  4. Step 4: Simplify right side
    191,472.56x = 19,198,211,002.94
  5. Step 5: Solve for x
    x = 19,198,211,002.94/191,472.56
  6. Step 6: Final answer
    x = 100,266.12

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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.