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Finding the Fourth Proportional to 365,702.15, 548,355.99 and 165,913.53

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Solution

The fourth proportional to 365,702.15, 548,355.99 and 165,913.53 is: 248,780.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,702.15 : 548,355.99 = 165,913.53 : x
  2. Step 2: Convert to fraction form
    365,702.15/548,355.99 = 165,913.53/x
  3. Step 3: Cross multiply
    365,702.15x = 548,355.99 × 165,913.53
  4. Step 4: Simplify right side
    365,702.15x = 90,979,676,563.39
  5. Step 5: Solve for x
    x = 90,979,676,563.39/365,702.15
  6. Step 6: Final answer
    x = 248,780.81

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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.