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Finding the Fourth Proportional to 70,902.51, 106,246.44 and 42,791.19

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Solution

The fourth proportional to 70,902.51, 106,246.44 and 42,791.19 is: 64,122.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,902.51 : 106,246.44 = 42,791.19 : x
  2. Step 2: Convert to fraction form
    70,902.51/106,246.44 = 42,791.19/x
  3. Step 3: Cross multiply
    70,902.51x = 106,246.44 × 42,791.19
  4. Step 4: Simplify right side
    70,902.51x = 4,546,411,600.86
  5. Step 5: Solve for x
    x = 4,546,411,600.86/70,902.51
  6. Step 6: Final answer
    x = 64,122.01

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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.