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Finding the Fourth Proportional to 72,465.82, 100,011.16 and 48,265.44

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Solution

The fourth proportional to 72,465.82, 100,011.16 and 48,265.44 is: 66,611.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,465.82 : 100,011.16 = 48,265.44 : x
  2. Step 2: Convert to fraction form
    72,465.82/100,011.16 = 48,265.44/x
  3. Step 3: Cross multiply
    72,465.82x = 100,011.16 × 48,265.44
  4. Step 4: Simplify right side
    72,465.82x = 4,827,082,642.31
  5. Step 5: Solve for x
    x = 4,827,082,642.31/72,465.82
  6. Step 6: Final answer
    x = 66,611.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.