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Finding the Fourth Proportional to 116,511.10, 174,766.65 and 74,520.70

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Solution

The fourth proportional to 116,511.10, 174,766.65 and 74,520.70 is: 111,781.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,511.10 : 174,766.65 = 74,520.70 : x
  2. Step 2: Convert to fraction form
    116,511.10/174,766.65 = 74,520.70/x
  3. Step 3: Cross multiply
    116,511.10x = 174,766.65 × 74,520.70
  4. Step 4: Simplify right side
    116,511.10x = 13,023,733,094.66
  5. Step 5: Solve for x
    x = 13,023,733,094.66/116,511.10
  6. Step 6: Final answer
    x = 111,781.05

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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.