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Finding the Fourth Proportional to 72,007.36, 107,866.33 and 35,874.90

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Solution

The fourth proportional to 72,007.36, 107,866.33 and 35,874.90 is: 53,740.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,007.36 : 107,866.33 = 35,874.90 : x
  2. Step 2: Convert to fraction form
    72,007.36/107,866.33 = 35,874.90/x
  3. Step 3: Cross multiply
    72,007.36x = 107,866.33 × 35,874.90
  4. Step 4: Simplify right side
    72,007.36x = 3,869,693,712.43
  5. Step 5: Solve for x
    x = 3,869,693,712.43/72,007.36
  6. Step 6: Final answer
    x = 53,740.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.