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Finding the Fourth Proportional to 363,616.56, 545,462.16 and 139,165.80

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Solution

The fourth proportional to 363,616.56, 545,462.16 and 139,165.80 is: 208,762.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,616.56 : 545,462.16 = 139,165.80 : x
  2. Step 2: Convert to fraction form
    363,616.56/545,462.16 = 139,165.80/x
  3. Step 3: Cross multiply
    363,616.56x = 545,462.16 × 139,165.80
  4. Step 4: Simplify right side
    363,616.56x = 75,909,677,866.13
  5. Step 5: Solve for x
    x = 75,909,677,866.13/363,616.56
  6. Step 6: Final answer
    x = 208,762.98

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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.