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Finding the Fourth Proportional to 107,790.58, 148,754.37 and 61,858.62

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Solution

The fourth proportional to 107,790.58, 148,754.37 and 61,858.62 is: 85,366.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,790.58 : 148,754.37 = 61,858.62 : x
  2. Step 2: Convert to fraction form
    107,790.58/148,754.37 = 61,858.62/x
  3. Step 3: Cross multiply
    107,790.58x = 148,754.37 × 61,858.62
  4. Step 4: Simplify right side
    107,790.58x = 9,201,740,047.17
  5. Step 5: Solve for x
    x = 9,201,740,047.17/107,790.58
  6. Step 6: Final answer
    x = 85,366.83

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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.