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Finding the Fourth Proportional to 617,672.12, 926,515.86 and 168,415.16

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Solution

The fourth proportional to 617,672.12, 926,515.86 and 168,415.16 is: 252,624.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,672.12 : 926,515.86 = 168,415.16 : x
  2. Step 2: Convert to fraction form
    617,672.12/926,515.86 = 168,415.16/x
  3. Step 3: Cross multiply
    617,672.12x = 926,515.86 × 168,415.16
  4. Step 4: Simplify right side
    617,672.12x = 156,039,316,804.44
  5. Step 5: Solve for x
    x = 156,039,316,804.44/617,672.12
  6. Step 6: Final answer
    x = 252,624.83

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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.