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Finding the Fourth Proportional to 69,690.42, 96,151.59 and 39,470.94

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Solution

The fourth proportional to 69,690.42, 96,151.59 and 39,470.94 is: 54,457.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,690.42 : 96,151.59 = 39,470.94 : x
  2. Step 2: Convert to fraction form
    69,690.42/96,151.59 = 39,470.94/x
  3. Step 3: Cross multiply
    69,690.42x = 96,151.59 × 39,470.94
  4. Step 4: Simplify right side
    69,690.42x = 3,795,193,639.79
  5. Step 5: Solve for x
    x = 3,795,193,639.79/69,690.42
  6. Step 6: Final answer
    x = 54,457.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.