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Finding the Fourth Proportional to 544,356.79, 751,129.95 and 311,747.55

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Solution

The fourth proportional to 544,356.79, 751,129.95 and 311,747.55 is: 430,164.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,356.79 : 751,129.95 = 311,747.55 : x
  2. Step 2: Convert to fraction form
    544,356.79/751,129.95 = 311,747.55/x
  3. Step 3: Cross multiply
    544,356.79x = 751,129.95 × 311,747.55
  4. Step 4: Simplify right side
    544,356.79x = 234,162,920,475.07
  5. Step 5: Solve for x
    x = 234,162,920,475.07/544,356.79
  6. Step 6: Final answer
    x = 430,164.42

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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.