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Finding the Fourth Proportional to 288,591.70, 398,140.10 and 191,842.34

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Solution

The fourth proportional to 288,591.70, 398,140.10 and 191,842.34 is: 264,665.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,591.70 : 398,140.10 = 191,842.34 : x
  2. Step 2: Convert to fraction form
    288,591.70/398,140.10 = 191,842.34/x
  3. Step 3: Cross multiply
    288,591.70x = 398,140.10 × 191,842.34
  4. Step 4: Simplify right side
    288,591.70x = 76,380,128,431.83
  5. Step 5: Solve for x
    x = 76,380,128,431.83/288,591.70
  6. Step 6: Final answer
    x = 264,665.02

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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.