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Finding the Fourth Proportional to 406,976.60, 610,683.60 and 170,343.20

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Solution

The fourth proportional to 406,976.60, 610,683.60 and 170,343.20 is: 255,606.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,976.60 : 610,683.60 = 170,343.20 : x
  2. Step 2: Convert to fraction form
    406,976.60/610,683.60 = 170,343.20/x
  3. Step 3: Cross multiply
    406,976.60x = 610,683.60 × 170,343.20
  4. Step 4: Simplify right side
    406,976.60x = 104,025,798,611.52
  5. Step 5: Solve for x
    x = 104,025,798,611.52/406,976.60
  6. Step 6: Final answer
    x = 255,606.34

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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.