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Finding the Fourth Proportional to 262,206.80, 393,407.40 and 104,548.40

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Solution

The fourth proportional to 262,206.80, 393,407.40 and 104,548.40 is: 156,861.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,206.80 : 393,407.40 = 104,548.40 : x
  2. Step 2: Convert to fraction form
    262,206.80/393,407.40 = 104,548.40/x
  3. Step 3: Cross multiply
    262,206.80x = 393,407.40 × 104,548.40
  4. Step 4: Simplify right side
    262,206.80x = 41,130,114,218.16
  5. Step 5: Solve for x
    x = 41,130,114,218.16/262,206.80
  6. Step 6: Final answer
    x = 156,861.36

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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.