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Finding the Fourth Proportional to 118,927.60, 164,121.66 and 65,212.48

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Solution

The fourth proportional to 118,927.60, 164,121.66 and 65,212.48 is: 89,994.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,927.60 : 164,121.66 = 65,212.48 : x
  2. Step 2: Convert to fraction form
    118,927.60/164,121.66 = 65,212.48/x
  3. Step 3: Cross multiply
    118,927.60x = 164,121.66 × 65,212.48
  4. Step 4: Simplify right side
    118,927.60x = 10,702,780,470.32
  5. Step 5: Solve for x
    x = 10,702,780,470.32/118,927.60
  6. Step 6: Final answer
    x = 89,994.08

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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.