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Finding the Fourth Proportional to 70,883.80, 106,325.70 and 61,034.20

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Solution

The fourth proportional to 70,883.80, 106,325.70 and 61,034.20 is: 91,551.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,883.80 : 106,325.70 = 61,034.20 : x
  2. Step 2: Convert to fraction form
    70,883.80/106,325.70 = 61,034.20/x
  3. Step 3: Cross multiply
    70,883.80x = 106,325.70 × 61,034.20
  4. Step 4: Simplify right side
    70,883.80x = 6,489,504,038.94
  5. Step 5: Solve for x
    x = 6,489,504,038.94/70,883.80
  6. Step 6: Final answer
    x = 91,551.30

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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.