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Finding the Fourth Proportional to 70,511.75, 105,857.79 and 60,580.04

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Solution

The fourth proportional to 70,511.75, 105,857.79 and 60,580.04 is: 90,947.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,511.75 : 105,857.79 = 60,580.04 : x
  2. Step 2: Convert to fraction form
    70,511.75/105,857.79 = 60,580.04/x
  3. Step 3: Cross multiply
    70,511.75x = 105,857.79 × 60,580.04
  4. Step 4: Simplify right side
    70,511.75x = 6,412,869,152.51
  5. Step 5: Solve for x
    x = 6,412,869,152.51/70,511.75
  6. Step 6: Final answer
    x = 90,947.53

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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.