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Finding the Fourth Proportional to 70,466.74, 105,700.11 and 60,950.78

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Solution

The fourth proportional to 70,466.74, 105,700.11 and 60,950.78 is: 91,426.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,466.74 : 105,700.11 = 60,950.78 : x
  2. Step 2: Convert to fraction form
    70,466.74/105,700.11 = 60,950.78/x
  3. Step 3: Cross multiply
    70,466.74x = 105,700.11 × 60,950.78
  4. Step 4: Simplify right side
    70,466.74x = 6,442,503,317.33
  5. Step 5: Solve for x
    x = 6,442,503,317.33/70,466.74
  6. Step 6: Final answer
    x = 91,426.16

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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.