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Finding the Fourth Proportional to 292,664.60, 439,142.70 and 166,401.80

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Solution

The fourth proportional to 292,664.60, 439,142.70 and 166,401.80 is: 249,685.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,664.60 : 439,142.70 = 166,401.80 : x
  2. Step 2: Convert to fraction form
    292,664.60/439,142.70 = 166,401.80/x
  3. Step 3: Cross multiply
    292,664.60x = 439,142.70 × 166,401.80
  4. Step 4: Simplify right side
    292,664.60x = 73,074,135,736.86
  5. Step 5: Solve for x
    x = 73,074,135,736.86/292,664.60
  6. Step 6: Final answer
    x = 249,685.60

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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.