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Finding the Fourth Proportional to 73,055.64, 100,816.74 and 39,521.64

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Solution

The fourth proportional to 73,055.64, 100,816.74 and 39,521.64 is: 54,539.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,055.64 : 100,816.74 = 39,521.64 : x
  2. Step 2: Convert to fraction form
    73,055.64/100,816.74 = 39,521.64/x
  3. Step 3: Cross multiply
    73,055.64x = 100,816.74 × 39,521.64
  4. Step 4: Simplify right side
    73,055.64x = 3,984,442,904.25
  5. Step 5: Solve for x
    x = 3,984,442,904.25/73,055.64
  6. Step 6: Final answer
    x = 54,539.84

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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.