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Finding the Fourth Proportional to 72,572.83, 100,192.14 and 48,367.40

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Solution

The fourth proportional to 72,572.83, 100,192.14 and 48,367.40 is: 66,774.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,572.83 : 100,192.14 = 48,367.40 : x
  2. Step 2: Convert to fraction form
    72,572.83/100,192.14 = 48,367.40/x
  3. Step 3: Cross multiply
    72,572.83x = 100,192.14 × 48,367.40
  4. Step 4: Simplify right side
    72,572.83x = 4,846,032,811.28
  5. Step 5: Solve for x
    x = 4,846,032,811.28/72,572.83
  6. Step 6: Final answer
    x = 66,774.76

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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.