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Finding the Fourth Proportional to 191,650.28, 287,515.53 and 65,280.56

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Solution

The fourth proportional to 191,650.28, 287,515.53 and 65,280.56 is: 97,934.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,650.28 : 287,515.53 = 65,280.56 : x
  2. Step 2: Convert to fraction form
    191,650.28/287,515.53 = 65,280.56/x
  3. Step 3: Cross multiply
    191,650.28x = 287,515.53 × 65,280.56
  4. Step 4: Simplify right side
    191,650.28x = 18,769,173,369.52
  5. Step 5: Solve for x
    x = 18,769,173,369.52/191,650.28
  6. Step 6: Final answer
    x = 97,934.50

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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.