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Finding the Fourth Proportional to 438,768.05, 605,499.93 and 247,793.72

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Solution

The fourth proportional to 438,768.05, 605,499.93 and 247,793.72 is: 341,955.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,768.05 : 605,499.93 = 247,793.72 : x
  2. Step 2: Convert to fraction form
    438,768.05/605,499.93 = 247,793.72/x
  3. Step 3: Cross multiply
    438,768.05x = 605,499.93 × 247,793.72
  4. Step 4: Simplify right side
    438,768.05x = 150,039,077,086.94
  5. Step 5: Solve for x
    x = 150,039,077,086.94/438,768.05
  6. Step 6: Final answer
    x = 341,955.34

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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.