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Finding the Fourth Proportional to 191,523.96, 287,405.70 and 73,205.40

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Solution

The fourth proportional to 191,523.96, 287,405.70 and 73,205.40 is: 109,853.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,523.96 : 287,405.70 = 73,205.40 : x
  2. Step 2: Convert to fraction form
    191,523.96/287,405.70 = 73,205.40/x
  3. Step 3: Cross multiply
    191,523.96x = 287,405.70 × 73,205.40
  4. Step 4: Simplify right side
    191,523.96x = 21,039,649,230.78
  5. Step 5: Solve for x
    x = 21,039,649,230.78/191,523.96
  6. Step 6: Final answer
    x = 109,853.88

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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.