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Finding the Fourth Proportional to 72,296.64, 99,773.44 and 40,466.88

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Solution

The fourth proportional to 72,296.64, 99,773.44 and 40,466.88 is: 55,846.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,296.64 : 99,773.44 = 40,466.88 : x
  2. Step 2: Convert to fraction form
    72,296.64/99,773.44 = 40,466.88/x
  3. Step 3: Cross multiply
    72,296.64x = 99,773.44 × 40,466.88
  4. Step 4: Simplify right side
    72,296.64x = 4,037,519,823.67
  5. Step 5: Solve for x
    x = 4,037,519,823.67/72,296.64
  6. Step 6: Final answer
    x = 55,846.58

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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.