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Finding the Fourth Proportional to 72,818.51, 109,087.82 and 44,656.44

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Solution

The fourth proportional to 72,818.51, 109,087.82 and 44,656.44 is: 66,898.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,818.51 : 109,087.82 = 44,656.44 : x
  2. Step 2: Convert to fraction form
    72,818.51/109,087.82 = 44,656.44/x
  3. Step 3: Cross multiply
    72,818.51x = 109,087.82 × 44,656.44
  4. Step 4: Simplify right side
    72,818.51x = 4,871,473,465.28
  5. Step 5: Solve for x
    x = 4,871,473,465.28/72,818.51
  6. Step 6: Final answer
    x = 66,898.84

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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.