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Finding the Fourth Proportional to 72,329.22, 99,826.14 and 43,255.68

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Solution

The fourth proportional to 72,329.22, 99,826.14 and 43,255.68 is: 59,699.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,329.22 : 99,826.14 = 43,255.68 : x
  2. Step 2: Convert to fraction form
    72,329.22/99,826.14 = 43,255.68/x
  3. Step 3: Cross multiply
    72,329.22x = 99,826.14 × 43,255.68
  4. Step 4: Simplify right side
    72,329.22x = 4,318,047,567.48
  5. Step 5: Solve for x
    x = 4,318,047,567.48/72,329.22
  6. Step 6: Final answer
    x = 59,699.91

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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.