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Finding the Fourth Proportional to 70,874.46, 105,756.45 and 63,427.74

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Solution

The fourth proportional to 70,874.46, 105,756.45 and 63,427.74 is: 94,644.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,874.46 : 105,756.45 = 63,427.74 : x
  2. Step 2: Convert to fraction form
    70,874.46/105,756.45 = 63,427.74/x
  3. Step 3: Cross multiply
    70,874.46x = 105,756.45 × 63,427.74
  4. Step 4: Simplify right side
    70,874.46x = 6,707,892,613.92
  5. Step 5: Solve for x
    x = 6,707,892,613.92/70,874.46
  6. Step 6: Final answer
    x = 94,644.71

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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.