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Finding the Fourth Proportional to 72,156.01, 108,244.77 and 22,231.93

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Solution

The fourth proportional to 72,156.01, 108,244.77 and 22,231.93 is: 33,351.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,156.01 : 108,244.77 = 22,231.93 : x
  2. Step 2: Convert to fraction form
    72,156.01/108,244.77 = 22,231.93/x
  3. Step 3: Cross multiply
    72,156.01x = 108,244.77 × 22,231.93
  4. Step 4: Simplify right side
    72,156.01x = 2,406,490,149.51
  5. Step 5: Solve for x
    x = 2,406,490,149.51/72,156.01
  6. Step 6: Final answer
    x = 33,351.21

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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.