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Finding the Fourth Proportional to 118,049.84, 162,908.78 and 64,334.87

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Solution

The fourth proportional to 118,049.84, 162,908.78 and 64,334.87 is: 88,782.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,049.84 : 162,908.78 = 64,334.87 : x
  2. Step 2: Convert to fraction form
    118,049.84/162,908.78 = 64,334.87/x
  3. Step 3: Cross multiply
    118,049.84x = 162,908.78 × 64,334.87
  4. Step 4: Simplify right side
    118,049.84x = 10,480,714,046.94
  5. Step 5: Solve for x
    x = 10,480,714,046.94/118,049.84
  6. Step 6: Final answer
    x = 88,782.12

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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.