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Finding the Fourth Proportional to 106,459.12, 159,602 and 39,861.92

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Solution

The fourth proportional to 106,459.12, 159,602 and 39,861.92 is: 59,760.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,459.12 : 159,602 = 39,861.92 : x
  2. Step 2: Convert to fraction form
    106,459.12/159,602 = 39,861.92/x
  3. Step 3: Cross multiply
    106,459.12x = 159,602 × 39,861.92
  4. Step 4: Simplify right side
    106,459.12x = 6,362,042,155.84
  5. Step 5: Solve for x
    x = 6,362,042,155.84/106,459.12
  6. Step 6: Final answer
    x = 59,760.42

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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.