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Finding the Fourth Proportional to 118,754.52, 163,880.46 and 71,009.88

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Solution

The fourth proportional to 118,754.52, 163,880.46 and 71,009.88 is: 97,993.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,754.52 : 163,880.46 = 71,009.88 : x
  2. Step 2: Convert to fraction form
    118,754.52/163,880.46 = 71,009.88/x
  3. Step 3: Cross multiply
    118,754.52x = 163,880.46 × 71,009.88
  4. Step 4: Simplify right side
    118,754.52x = 11,637,131,798.94
  5. Step 5: Solve for x
    x = 11,637,131,798.94/118,754.52
  6. Step 6: Final answer
    x = 97,993.17

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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.