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Finding the Fourth Proportional to 84,435.66, 126,697.23 and 61,253.46

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Solution

The fourth proportional to 84,435.66, 126,697.23 and 61,253.46 is: 91,911.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,435.66 : 126,697.23 = 61,253.46 : x
  2. Step 2: Convert to fraction form
    84,435.66/126,697.23 = 61,253.46/x
  3. Step 3: Cross multiply
    84,435.66x = 126,697.23 × 61,253.46
  4. Step 4: Simplify right side
    84,435.66x = 7,760,643,709.92
  5. Step 5: Solve for x
    x = 7,760,643,709.92/84,435.66
  6. Step 6: Final answer
    x = 91,911.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.