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Finding the Fourth Proportional to 73,302.30, 109,957.55 and 20,710.42

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Solution

The fourth proportional to 73,302.30, 109,957.55 and 20,710.42 is: 31,066.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,302.30 : 109,957.55 = 20,710.42 : x
  2. Step 2: Convert to fraction form
    73,302.30/109,957.55 = 20,710.42/x
  3. Step 3: Cross multiply
    73,302.30x = 109,957.55 × 20,710.42
  4. Step 4: Simplify right side
    73,302.30x = 2,277,266,664.23
  5. Step 5: Solve for x
    x = 2,277,266,664.23/73,302.30
  6. Step 6: Final answer
    x = 31,066.78

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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.