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Finding the Fourth Proportional to 90,793.64, 136,212.30 and 28,464.14

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Solution

The fourth proportional to 90,793.64, 136,212.30 and 28,464.14 is: 42,703.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,793.64 : 136,212.30 = 28,464.14 : x
  2. Step 2: Convert to fraction form
    90,793.64/136,212.30 = 28,464.14/x
  3. Step 3: Cross multiply
    90,793.64x = 136,212.30 × 28,464.14
  4. Step 4: Simplify right side
    90,793.64x = 3,877,166,317.45
  5. Step 5: Solve for x
    x = 3,877,166,317.45/90,793.64
  6. Step 6: Final answer
    x = 42,703.06

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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.