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Finding the Fourth Proportional to 191,912.20, 287,760.30 and 73,587.40

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Solution

The fourth proportional to 191,912.20, 287,760.30 and 73,587.40 is: 110,339.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,912.20 : 287,760.30 = 73,587.40 : x
  2. Step 2: Convert to fraction form
    191,912.20/287,760.30 = 73,587.40/x
  3. Step 3: Cross multiply
    191,912.20x = 287,760.30 × 73,587.40
  4. Step 4: Simplify right side
    191,912.20x = 21,175,532,300.22
  5. Step 5: Solve for x
    x = 21,175,532,300.22/191,912.20
  6. Step 6: Final answer
    x = 110,339.69

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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.