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Finding the Fourth Proportional to 118,643.88, 163,723.62 and 64,927.56

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Solution

The fourth proportional to 118,643.88, 163,723.62 and 64,927.56 is: 89,597.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,643.88 : 163,723.62 = 64,927.56 : x
  2. Step 2: Convert to fraction form
    118,643.88/163,723.62 = 64,927.56/x
  3. Step 3: Cross multiply
    118,643.88x = 163,723.62 × 64,927.56
  4. Step 4: Simplify right side
    118,643.88x = 10,630,175,160.97
  5. Step 5: Solve for x
    x = 10,630,175,160.97/118,643.88
  6. Step 6: Final answer
    x = 89,597.33

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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.