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Finding the Fourth Proportional to 479,960.80, 719,746.80 and 164,255.20

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Solution

The fourth proportional to 479,960.80, 719,746.80 and 164,255.20 is: 246,316.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,960.80 : 719,746.80 = 164,255.20 : x
  2. Step 2: Convert to fraction form
    479,960.80/719,746.80 = 164,255.20/x
  3. Step 3: Cross multiply
    479,960.80x = 719,746.80 × 164,255.20
  4. Step 4: Simplify right side
    479,960.80x = 118,222,154,583.36
  5. Step 5: Solve for x
    x = 118,222,154,583.36/479,960.80
  6. Step 6: Final answer
    x = 246,316.27

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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.