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Finding the Fourth Proportional to 325,000.39, 487,511.37 and 111,766.20

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Solution

The fourth proportional to 325,000.39, 487,511.37 and 111,766.20 is: 167,653.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,000.39 : 487,511.37 = 111,766.20 : x
  2. Step 2: Convert to fraction form
    325,000.39/487,511.37 = 111,766.20/x
  3. Step 3: Cross multiply
    325,000.39x = 487,511.37 × 111,766.20
  4. Step 4: Simplify right side
    325,000.39x = 54,487,293,281.69
  5. Step 5: Solve for x
    x = 54,487,293,281.69/325,000.39
  6. Step 6: Final answer
    x = 167,653.01

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1.5x scale

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.