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Finding the Fourth Proportional to 262,359.60, 393,733.80 and 104,701.20

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Solution

The fourth proportional to 262,359.60, 393,733.80 and 104,701.20 is: 157,129.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,359.60 : 393,733.80 = 104,701.20 : x
  2. Step 2: Convert to fraction form
    262,359.60/393,733.80 = 104,701.20/x
  3. Step 3: Cross multiply
    262,359.60x = 393,733.80 × 104,701.20
  4. Step 4: Simplify right side
    262,359.60x = 41,224,401,340.56
  5. Step 5: Solve for x
    x = 41,224,401,340.56/262,359.60
  6. Step 6: Final answer
    x = 157,129.38

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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.