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Finding the Fourth Proportional to 178,691.68, 246,603.54 and 98,118.64

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Solution

The fourth proportional to 178,691.68, 246,603.54 and 98,118.64 is: 135,408.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,691.68 : 246,603.54 = 98,118.64 : x
  2. Step 2: Convert to fraction form
    178,691.68/246,603.54 = 98,118.64/x
  3. Step 3: Cross multiply
    178,691.68x = 246,603.54 × 98,118.64
  4. Step 4: Simplify right side
    178,691.68x = 24,196,403,963.99
  5. Step 5: Solve for x
    x = 24,196,403,963.99/178,691.68
  6. Step 6: Final answer
    x = 135,408.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.