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Finding the Fourth Proportional to 61,179.51, 84,428.31 and 34,322.60

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Solution

The fourth proportional to 61,179.51, 84,428.31 and 34,322.60 is: 47,365.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,179.51 : 84,428.31 = 34,322.60 : x
  2. Step 2: Convert to fraction form
    61,179.51/84,428.31 = 34,322.60/x
  3. Step 3: Cross multiply
    61,179.51x = 84,428.31 × 34,322.60
  4. Step 4: Simplify right side
    61,179.51x = 2,897,799,112.81
  5. Step 5: Solve for x
    x = 2,897,799,112.81/61,179.51
  6. Step 6: Final answer
    x = 47,365.52

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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.