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Finding the Fourth Proportional to 73,925.60, 110,872.08 and 21,323.60

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Solution

The fourth proportional to 73,925.60, 110,872.08 and 21,323.60 is: 31,980.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,925.60 : 110,872.08 = 21,323.60 : x
  2. Step 2: Convert to fraction form
    73,925.60/110,872.08 = 21,323.60/x
  3. Step 3: Cross multiply
    73,925.60x = 110,872.08 × 21,323.60
  4. Step 4: Simplify right side
    73,925.60x = 2,364,191,885.09
  5. Step 5: Solve for x
    x = 2,364,191,885.09/73,925.60
  6. Step 6: Final answer
    x = 31,980.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.