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Finding the Fourth Proportional to 317,269.66, 437,830.88 and 172,074.86

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Solution

The fourth proportional to 317,269.66, 437,830.88 and 172,074.86 is: 237,462.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,269.66 : 437,830.88 = 172,074.86 : x
  2. Step 2: Convert to fraction form
    317,269.66/437,830.88 = 172,074.86/x
  3. Step 3: Cross multiply
    317,269.66x = 437,830.88 × 172,074.86
  4. Step 4: Simplify right side
    317,269.66x = 75,339,688,044.07
  5. Step 5: Solve for x
    x = 75,339,688,044.07/317,269.66
  6. Step 6: Final answer
    x = 237,462.63

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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.