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Finding the Fourth Proportional to 70,190.35, 96,838.37 and 54,931.94

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Solution

The fourth proportional to 70,190.35, 96,838.37 and 54,931.94 is: 75,787.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,190.35 : 96,838.37 = 54,931.94 : x
  2. Step 2: Convert to fraction form
    70,190.35/96,838.37 = 54,931.94/x
  3. Step 3: Cross multiply
    70,190.35x = 96,838.37 × 54,931.94
  4. Step 4: Simplify right side
    70,190.35x = 5,319,519,340.82
  5. Step 5: Solve for x
    x = 5,319,519,340.82/70,190.35
  6. Step 6: Final answer
    x = 75,787.05

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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.