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Finding the Fourth Proportional to 191,362.72, 287,108.65 and 84,732.12

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Solution

The fourth proportional to 191,362.72, 287,108.65 and 84,732.12 is: 127,126.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,362.72 : 287,108.65 = 84,732.12 : x
  2. Step 2: Convert to fraction form
    191,362.72/287,108.65 = 84,732.12/x
  3. Step 3: Cross multiply
    191,362.72x = 287,108.65 × 84,732.12
  4. Step 4: Simplify right side
    191,362.72x = 24,327,324,584.84
  5. Step 5: Solve for x
    x = 24,327,324,584.84/191,362.72
  6. Step 6: Final answer
    x = 127,126.77

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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.