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Finding the Fourth Proportional to 72,818.51, 109,226.84 and 39,749.24

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Solution

The fourth proportional to 72,818.51, 109,226.84 and 39,749.24 is: 59,623.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,818.51 : 109,226.84 = 39,749.24 : x
  2. Step 2: Convert to fraction form
    72,818.51/109,226.84 = 39,749.24/x
  3. Step 3: Cross multiply
    72,818.51x = 109,226.84 × 39,749.24
  4. Step 4: Simplify right side
    72,818.51x = 4,341,683,951.92
  5. Step 5: Solve for x
    x = 4,341,683,951.92/72,818.51
  6. Step 6: Final answer
    x = 59,623.36

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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.