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Finding the Fourth Proportional to 118,469.34, 163,498.32 and 67,470.84

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Solution

The fourth proportional to 118,469.34, 163,498.32 and 67,470.84 is: 93,115.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,469.34 : 163,498.32 = 67,470.84 : x
  2. Step 2: Convert to fraction form
    118,469.34/163,498.32 = 67,470.84/x
  3. Step 3: Cross multiply
    118,469.34x = 163,498.32 × 67,470.84
  4. Step 4: Simplify right side
    118,469.34x = 11,031,368,988.99
  5. Step 5: Solve for x
    x = 11,031,368,988.99/118,469.34
  6. Step 6: Final answer
    x = 93,115.81

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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.