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Finding the Fourth Proportional to 70,691.54, 106,055.53 and 20,773.26

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Solution

The fourth proportional to 70,691.54, 106,055.53 and 20,773.26 is: 31,165.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,691.54 : 106,055.53 = 20,773.26 : x
  2. Step 2: Convert to fraction form
    70,691.54/106,055.53 = 20,773.26/x
  3. Step 3: Cross multiply
    70,691.54x = 106,055.53 × 20,773.26
  4. Step 4: Simplify right side
    70,691.54x = 2,203,119,047.19
  5. Step 5: Solve for x
    x = 2,203,119,047.19/70,691.54
  6. Step 6: Final answer
    x = 31,165.25

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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.