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Finding the Fourth Proportional to 118,674.66, 163,771.21 and 64,963.08

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Solution

The fourth proportional to 118,674.66, 163,771.21 and 64,963.08 is: 89,649.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,674.66 : 163,771.21 = 64,963.08 : x
  2. Step 2: Convert to fraction form
    118,674.66/163,771.21 = 64,963.08/x
  3. Step 3: Cross multiply
    118,674.66x = 163,771.21 × 64,963.08
  4. Step 4: Simplify right side
    118,674.66x = 10,639,082,216.93
  5. Step 5: Solve for x
    x = 10,639,082,216.93/118,674.66
  6. Step 6: Final answer
    x = 89,649.15

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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.