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Finding the Fourth Proportional to 62,415.72, 93,604.14 and 20,853

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Solution

The fourth proportional to 62,415.72, 93,604.14 and 20,853 is: 31,273.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,415.72 : 93,604.14 = 20,853 : x
  2. Step 2: Convert to fraction form
    62,415.72/93,604.14 = 20,853/x
  3. Step 3: Cross multiply
    62,415.72x = 93,604.14 × 20,853
  4. Step 4: Simplify right side
    62,415.72x = 1,951,927,131.42
  5. Step 5: Solve for x
    x = 1,951,927,131.42/62,415.72
  6. Step 6: Final answer
    x = 31,273.01

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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.