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Finding the Fourth Proportional to 118,699.26, 163,816.11 and 70,951.59

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Solution

The fourth proportional to 118,699.26, 163,816.11 and 70,951.59 is: 97,919.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,699.26 : 163,816.11 = 70,951.59 : x
  2. Step 2: Convert to fraction form
    118,699.26/163,816.11 = 70,951.59/x
  3. Step 3: Cross multiply
    118,699.26x = 163,816.11 × 70,951.59
  4. Step 4: Simplify right side
    118,699.26x = 11,623,013,472.11
  5. Step 5: Solve for x
    x = 11,623,013,472.11/118,699.26
  6. Step 6: Final answer
    x = 97,919.85

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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.