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Finding the Fourth Proportional to 74,064.64, 111,093.72 and 21,472.96

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Solution

The fourth proportional to 74,064.64, 111,093.72 and 21,472.96 is: 32,208.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,064.64 : 111,093.72 = 21,472.96 : x
  2. Step 2: Convert to fraction form
    74,064.64/111,093.72 = 21,472.96/x
  3. Step 3: Cross multiply
    74,064.64x = 111,093.72 × 21,472.96
  4. Step 4: Simplify right side
    74,064.64x = 2,385,511,005.81
  5. Step 5: Solve for x
    x = 2,385,511,005.81/74,064.64
  6. Step 6: Final answer
    x = 32,208.50

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1.5x scale

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.