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Finding the Fourth Proportional to 191,766.80, 287,650.20 and 156,774.80

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Solution

The fourth proportional to 191,766.80, 287,650.20 and 156,774.80 is: 235,162.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,766.80 : 287,650.20 = 156,774.80 : x
  2. Step 2: Convert to fraction form
    191,766.80/287,650.20 = 156,774.80/x
  3. Step 3: Cross multiply
    191,766.80x = 287,650.20 × 156,774.80
  4. Step 4: Simplify right side
    191,766.80x = 45,096,302,574.96
  5. Step 5: Solve for x
    x = 45,096,302,574.96/191,766.80
  6. Step 6: Final answer
    x = 235,162.20

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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.