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Finding the Fourth Proportional to 70,380.36, 105,041.94 and 60,850.52

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Solution

The fourth proportional to 70,380.36, 105,041.94 and 60,850.52 is: 90,818.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,380.36 : 105,041.94 = 60,850.52 : x
  2. Step 2: Convert to fraction form
    70,380.36/105,041.94 = 60,850.52/x
  3. Step 3: Cross multiply
    70,380.36x = 105,041.94 × 60,850.52
  4. Step 4: Simplify right side
    70,380.36x = 6,391,856,670.81
  5. Step 5: Solve for x
    x = 6,391,856,670.81/70,380.36
  6. Step 6: Final answer
    x = 90,818.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.