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Finding the Fourth Proportional to 72,391.94, 99,867.03 and 48,205.07

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Solution

The fourth proportional to 72,391.94, 99,867.03 and 48,205.07 is: 66,500.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,391.94 : 99,867.03 = 48,205.07 : x
  2. Step 2: Convert to fraction form
    72,391.94/99,867.03 = 48,205.07/x
  3. Step 3: Cross multiply
    72,391.94x = 99,867.03 × 48,205.07
  4. Step 4: Simplify right side
    72,391.94x = 4,814,097,171.84
  5. Step 5: Solve for x
    x = 4,814,097,171.84/72,391.94
  6. Step 6: Final answer
    x = 66,500.46

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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.