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Finding the Fourth Proportional to 82,735.06, 124,024.80 and 43,318.06

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Solution

The fourth proportional to 82,735.06, 124,024.80 and 43,318.06 is: 64,936.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,735.06 : 124,024.80 = 43,318.06 : x
  2. Step 2: Convert to fraction form
    82,735.06/124,024.80 = 43,318.06/x
  3. Step 3: Cross multiply
    82,735.06x = 124,024.80 × 43,318.06
  4. Step 4: Simplify right side
    82,735.06x = 5,372,513,727.89
  5. Step 5: Solve for x
    x = 5,372,513,727.89/82,735.06
  6. Step 6: Final answer
    x = 64,936.36

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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.