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Finding the Fourth Proportional to 289,337.56, 399,019.48 and 198,533.32

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Solution

The fourth proportional to 289,337.56, 399,019.48 and 198,533.32 is: 273,793.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,337.56 : 399,019.48 = 198,533.32 : x
  2. Step 2: Convert to fraction form
    289,337.56/399,019.48 = 198,533.32/x
  3. Step 3: Cross multiply
    289,337.56x = 399,019.48 × 198,533.32
  4. Step 4: Simplify right side
    289,337.56x = 79,218,662,109.07
  5. Step 5: Solve for x
    x = 79,218,662,109.07/289,337.56
  6. Step 6: Final answer
    x = 273,793.22

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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.