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Finding the Fourth Proportional to 154,793.79, 213,617.84 and 86,825.85

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Solution

The fourth proportional to 154,793.79, 213,617.84 and 86,825.85 is: 119,821.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,793.79 : 213,617.84 = 86,825.85 : x
  2. Step 2: Convert to fraction form
    154,793.79/213,617.84 = 86,825.85/x
  3. Step 3: Cross multiply
    154,793.79x = 213,617.84 × 86,825.85
  4. Step 4: Simplify right side
    154,793.79x = 18,547,550,099.03
  5. Step 5: Solve for x
    x = 18,547,550,099.03/154,793.79
  6. Step 6: Final answer
    x = 119,821.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.