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Finding the Fourth Proportional to 70,906.56, 106,259.56 and 39,330.52

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Solution

The fourth proportional to 70,906.56, 106,259.56 and 39,330.52 is: 58,940.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,906.56 : 106,259.56 = 39,330.52 : x
  2. Step 2: Convert to fraction form
    70,906.56/106,259.56 = 39,330.52/x
  3. Step 3: Cross multiply
    70,906.56x = 106,259.56 × 39,330.52
  4. Step 4: Simplify right side
    70,906.56x = 4,179,243,749.77
  5. Step 5: Solve for x
    x = 4,179,243,749.77/70,906.56
  6. Step 6: Final answer
    x = 58,940.16

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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.