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Finding the Fourth Proportional to 173,211.20, 259,816.80 and 165,046.40

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Solution

The fourth proportional to 173,211.20, 259,816.80 and 165,046.40 is: 247,569.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,211.20 : 259,816.80 = 165,046.40 : x
  2. Step 2: Convert to fraction form
    173,211.20/259,816.80 = 165,046.40/x
  3. Step 3: Cross multiply
    173,211.20x = 259,816.80 × 165,046.40
  4. Step 4: Simplify right side
    173,211.20x = 42,881,827,499.52
  5. Step 5: Solve for x
    x = 42,881,827,499.52/173,211.20
  6. Step 6: Final answer
    x = 247,569.60

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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.