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Finding the Fourth Proportional to 72,464.40, 99,976.96 and 43,773.32

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Solution

The fourth proportional to 72,464.40, 99,976.96 and 43,773.32 is: 60,392.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,464.40 : 99,976.96 = 43,773.32 : x
  2. Step 2: Convert to fraction form
    72,464.40/99,976.96 = 43,773.32/x
  3. Step 3: Cross multiply
    72,464.40x = 99,976.96 × 43,773.32
  4. Step 4: Simplify right side
    72,464.40x = 4,376,323,462.71
  5. Step 5: Solve for x
    x = 4,376,323,462.71/72,464.40
  6. Step 6: Final answer
    x = 60,392.74

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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.