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Finding the Fourth Proportional to 118,297.70, 163,253.30 and 64,584.98

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Solution

The fourth proportional to 118,297.70, 163,253.30 and 64,584.98 is: 89,128.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,297.70 : 163,253.30 = 64,584.98 : x
  2. Step 2: Convert to fraction form
    118,297.70/163,253.30 = 64,584.98/x
  3. Step 3: Cross multiply
    118,297.70x = 163,253.30 × 64,584.98
  4. Step 4: Simplify right side
    118,297.70x = 10,543,709,976.24
  5. Step 5: Solve for x
    x = 10,543,709,976.24/118,297.70
  6. Step 6: Final answer
    x = 89,128.62

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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.