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Finding the Fourth Proportional to 77,470.58, 106,904.66 and 43,473.26

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Solution

The fourth proportional to 77,470.58, 106,904.66 and 43,473.26 is: 59,990.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,470.58 : 106,904.66 = 43,473.26 : x
  2. Step 2: Convert to fraction form
    77,470.58/106,904.66 = 43,473.26/x
  3. Step 3: Cross multiply
    77,470.58x = 106,904.66 × 43,473.26
  4. Step 4: Simplify right side
    77,470.58x = 4,647,494,079.39
  5. Step 5: Solve for x
    x = 4,647,494,079.39/77,470.58
  6. Step 6: Final answer
    x = 59,990.44

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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.