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Finding the Fourth Proportional to 113,369.78, 156,451.14 and 63,068.78

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Solution

The fourth proportional to 113,369.78, 156,451.14 and 63,068.78 is: 87,035.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,369.78 : 156,451.14 = 63,068.78 : x
  2. Step 2: Convert to fraction form
    113,369.78/156,451.14 = 63,068.78/x
  3. Step 3: Cross multiply
    113,369.78x = 156,451.14 × 63,068.78
  4. Step 4: Simplify right side
    113,369.78x = 9,867,182,529.41
  5. Step 5: Solve for x
    x = 9,867,182,529.41/113,369.78
  6. Step 6: Final answer
    x = 87,035.39

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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.