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Finding the Fourth Proportional to 262,059.20, 392,829.60 and 104,076.80

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Solution

The fourth proportional to 262,059.20, 392,829.60 and 104,076.80 is: 156,012.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,059.20 : 392,829.60 = 104,076.80 : x
  2. Step 2: Convert to fraction form
    262,059.20/392,829.60 = 104,076.80/x
  3. Step 3: Cross multiply
    262,059.20x = 392,829.60 × 104,076.80
  4. Step 4: Simplify right side
    262,059.20x = 40,884,447,713.28
  5. Step 5: Solve for x
    x = 40,884,447,713.28/262,059.20
  6. Step 6: Final answer
    x = 156,012.26

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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.