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Finding the Fourth Proportional to 61,435.73, 84,780.47 and 35,959.61

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Solution

The fourth proportional to 61,435.73, 84,780.47 and 35,959.61 is: 49,623.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,435.73 : 84,780.47 = 35,959.61 : x
  2. Step 2: Convert to fraction form
    61,435.73/84,780.47 = 35,959.61/x
  3. Step 3: Cross multiply
    61,435.73x = 84,780.47 × 35,959.61
  4. Step 4: Simplify right side
    61,435.73x = 3,048,672,457.02
  5. Step 5: Solve for x
    x = 3,048,672,457.02/61,435.73
  6. Step 6: Final answer
    x = 49,623.77

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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.