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Finding the Fourth Proportional to 101,064.20, 151,669.20 and 56,643.80

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Solution

The fourth proportional to 101,064.20, 151,669.20 and 56,643.80 is: 85,006.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,064.20 : 151,669.20 = 56,643.80 : x
  2. Step 2: Convert to fraction form
    101,064.20/151,669.20 = 56,643.80/x
  3. Step 3: Cross multiply
    101,064.20x = 151,669.20 × 56,643.80
  4. Step 4: Simplify right side
    101,064.20x = 8,591,119,830.96
  5. Step 5: Solve for x
    x = 8,591,119,830.96/101,064.20
  6. Step 6: Final answer
    x = 85,006.56

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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.