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Finding the Fourth Proportional to 262,420.61, 393,588.72 and 93,909.56

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Solution

The fourth proportional to 262,420.61, 393,588.72 and 93,909.56 is: 140,849.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,420.61 : 393,588.72 = 93,909.56 : x
  2. Step 2: Convert to fraction form
    262,420.61/393,588.72 = 93,909.56/x
  3. Step 3: Cross multiply
    262,420.61x = 393,588.72 × 93,909.56
  4. Step 4: Simplify right side
    262,420.61x = 36,961,741,548.22
  5. Step 5: Solve for x
    x = 36,961,741,548.22/262,420.61
  6. Step 6: Final answer
    x = 140,849.24

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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.