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Finding the Fourth Proportional to 72,867.77, 100,558.71 and 40,602.44

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Solution

The fourth proportional to 72,867.77, 100,558.71 and 40,602.44 is: 56,032.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,867.77 : 100,558.71 = 40,602.44 : x
  2. Step 2: Convert to fraction form
    72,867.77/100,558.71 = 40,602.44/x
  3. Step 3: Cross multiply
    72,867.77x = 100,558.71 × 40,602.44
  4. Step 4: Simplify right side
    72,867.77x = 4,082,928,486.46
  5. Step 5: Solve for x
    x = 4,082,928,486.46/72,867.77
  6. Step 6: Final answer
    x = 56,032.03

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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.