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Finding the Fourth Proportional to 61,222.81, 84,476.78 and 34,366.45

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Solution

The fourth proportional to 61,222.81, 84,476.78 and 34,366.45 is: 47,419.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,222.81 : 84,476.78 = 34,366.45 : x
  2. Step 2: Convert to fraction form
    61,222.81/84,476.78 = 34,366.45/x
  3. Step 3: Cross multiply
    61,222.81x = 84,476.78 × 34,366.45
  4. Step 4: Simplify right side
    61,222.81x = 2,903,166,613.65
  5. Step 5: Solve for x
    x = 2,903,166,613.65/61,222.81
  6. Step 6: Final answer
    x = 47,419.69

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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.