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Finding the Fourth Proportional to 116,088.39, 173,910.11 and 78,583.77

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Solution

The fourth proportional to 116,088.39, 173,910.11 and 78,583.77 is: 117,725.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,088.39 : 173,910.11 = 78,583.77 : x
  2. Step 2: Convert to fraction form
    116,088.39/173,910.11 = 78,583.77/x
  3. Step 3: Cross multiply
    116,088.39x = 173,910.11 × 78,583.77
  4. Step 4: Simplify right side
    116,088.39x = 13,666,511,692.00
  5. Step 5: Solve for x
    x = 13,666,511,692.00/116,088.39
  6. Step 6: Final answer
    x = 117,725.05

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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.