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Finding the Fourth Proportional to 243,087.72, 364,693.17 and 74,616.58

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Solution

The fourth proportional to 243,087.72, 364,693.17 and 74,616.58 is: 111,943.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,087.72 : 364,693.17 = 74,616.58 : x
  2. Step 2: Convert to fraction form
    243,087.72/364,693.17 = 74,616.58/x
  3. Step 3: Cross multiply
    243,087.72x = 364,693.17 × 74,616.58
  4. Step 4: Simplify right side
    243,087.72x = 27,212,157,094.76
  5. Step 5: Solve for x
    x = 27,212,157,094.76/243,087.72
  6. Step 6: Final answer
    x = 111,943.78

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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.