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Finding the Fourth Proportional to 72,917.84, 109,253.60 and 44,779.20

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Solution

The fourth proportional to 72,917.84, 109,253.60 and 44,779.20 is: 67,093.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,917.84 : 109,253.60 = 44,779.20 : x
  2. Step 2: Convert to fraction form
    72,917.84/109,253.60 = 44,779.20/x
  3. Step 3: Cross multiply
    72,917.84x = 109,253.60 × 44,779.20
  4. Step 4: Simplify right side
    72,917.84x = 4,892,288,805.12
  5. Step 5: Solve for x
    x = 4,892,288,805.12/72,917.84
  6. Step 6: Final answer
    x = 67,093.17

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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.