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Finding the Fourth Proportional to 262,443.30, 393,762.15 and 104,784.90

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Solution

The fourth proportional to 262,443.30, 393,762.15 and 104,784.90 is: 157,216.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,443.30 : 393,762.15 = 104,784.90 : x
  2. Step 2: Convert to fraction form
    262,443.30/393,762.15 = 104,784.90/x
  3. Step 3: Cross multiply
    262,443.30x = 393,762.15 × 104,784.90
  4. Step 4: Simplify right side
    262,443.30x = 41,260,327,511.54
  5. Step 5: Solve for x
    x = 41,260,327,511.54/262,443.30
  6. Step 6: Final answer
    x = 157,216.16

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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.