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Finding the Fourth Proportional to 69,691.51, 96,120.78 and 46,994.55

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Solution

The fourth proportional to 69,691.51, 96,120.78 and 46,994.55 is: 64,816.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,691.51 : 96,120.78 = 46,994.55 : x
  2. Step 2: Convert to fraction form
    69,691.51/96,120.78 = 46,994.55/x
  3. Step 3: Cross multiply
    69,691.51x = 96,120.78 × 46,994.55
  4. Step 4: Simplify right side
    69,691.51x = 4,517,153,076.09
  5. Step 5: Solve for x
    x = 4,517,153,076.09/69,691.51
  6. Step 6: Final answer
    x = 64,816.40

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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.