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Finding the Fourth Proportional to 317,172.38, 437,657.65 and 173,894.72

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Solution

The fourth proportional to 317,172.38, 437,657.65 and 173,894.72 is: 239,952.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,172.38 : 437,657.65 = 173,894.72 : x
  2. Step 2: Convert to fraction form
    317,172.38/437,657.65 = 173,894.72/x
  3. Step 3: Cross multiply
    317,172.38x = 437,657.65 × 173,894.72
  4. Step 4: Simplify right side
    317,172.38x = 76,106,351,879.58
  5. Step 5: Solve for x
    x = 76,106,351,879.58/317,172.38
  6. Step 6: Final answer
    x = 239,952.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.