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Finding the Fourth Proportional to 61,283.79, 84,562.42 and 34,421.15

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Solution

The fourth proportional to 61,283.79, 84,562.42 and 34,421.15 is: 47,496.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,283.79 : 84,562.42 = 34,421.15 : x
  2. Step 2: Convert to fraction form
    61,283.79/84,562.42 = 34,421.15/x
  3. Step 3: Cross multiply
    61,283.79x = 84,562.42 × 34,421.15
  4. Step 4: Simplify right side
    61,283.79x = 2,910,735,743.18
  5. Step 5: Solve for x
    x = 2,910,735,743.18/61,283.79
  6. Step 6: Final answer
    x = 47,496.01

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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.