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Finding the Fourth Proportional to 191,996.20, 287,627.10 and 103,220.20

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Solution

The fourth proportional to 191,996.20, 287,627.10 and 103,220.20 is: 154,632.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,996.20 : 287,627.10 = 103,220.20 : x
  2. Step 2: Convert to fraction form
    191,996.20/287,627.10 = 103,220.20/x
  3. Step 3: Cross multiply
    191,996.20x = 287,627.10 × 103,220.20
  4. Step 4: Simplify right side
    191,996.20x = 29,688,926,787.42
  5. Step 5: Solve for x
    x = 29,688,926,787.42/191,996.20
  6. Step 6: Final answer
    x = 154,632.89

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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.