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Finding the Fourth Proportional to 70,273.98, 105,294.33 and 57,132.54

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Solution

The fourth proportional to 70,273.98, 105,294.33 and 57,132.54 is: 85,603.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,273.98 : 105,294.33 = 57,132.54 : x
  2. Step 2: Convert to fraction form
    70,273.98/105,294.33 = 57,132.54/x
  3. Step 3: Cross multiply
    70,273.98x = 105,294.33 × 57,132.54
  4. Step 4: Simplify right side
    70,273.98x = 6,015,732,520.50
  5. Step 5: Solve for x
    x = 6,015,732,520.50/70,273.98
  6. Step 6: Final answer
    x = 85,603.98

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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.