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Finding the Fourth Proportional to 617,705.16, 926,443.60 and 191,161.46

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Solution

The fourth proportional to 617,705.16, 926,443.60 and 191,161.46 is: 286,706.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,705.16 : 926,443.60 = 191,161.46 : x
  2. Step 2: Convert to fraction form
    617,705.16/926,443.60 = 191,161.46/x
  3. Step 3: Cross multiply
    617,705.16x = 926,443.60 × 191,161.46
  4. Step 4: Simplify right side
    617,705.16x = 177,100,311,183.66
  5. Step 5: Solve for x
    x = 177,100,311,183.66/617,705.16
  6. Step 6: Final answer
    x = 286,706.87

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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.