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Finding the Fourth Proportional to 73,259.92, 109,895.34 and 31,135.28

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Solution

The fourth proportional to 73,259.92, 109,895.34 and 31,135.28 is: 46,705.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,259.92 : 109,895.34 = 31,135.28 : x
  2. Step 2: Convert to fraction form
    73,259.92/109,895.34 = 31,135.28/x
  3. Step 3: Cross multiply
    73,259.92x = 109,895.34 × 31,135.28
  4. Step 4: Simplify right side
    73,259.92x = 3,421,622,181.60
  5. Step 5: Solve for x
    x = 3,421,622,181.60/73,259.92
  6. Step 6: Final answer
    x = 46,705.24

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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.