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Finding the Fourth Proportional to 61,216.83, 84,485.70 and 34,359.53

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Solution

The fourth proportional to 61,216.83, 84,485.70 and 34,359.53 is: 47,419.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,216.83 : 84,485.70 = 34,359.53 : x
  2. Step 2: Convert to fraction form
    61,216.83/84,485.70 = 34,359.53/x
  3. Step 3: Cross multiply
    61,216.83x = 84,485.70 × 34,359.53
  4. Step 4: Simplify right side
    61,216.83x = 2,902,888,521.29
  5. Step 5: Solve for x
    x = 2,902,888,521.29/61,216.83
  6. Step 6: Final answer
    x = 47,419.78

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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.