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Finding the Fourth Proportional to 317,486.34, 473,137.55 and 307,874.82

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Solution

The fourth proportional to 317,486.34, 473,137.55 and 307,874.82 is: 458,813.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,486.34 : 473,137.55 = 307,874.82 : x
  2. Step 2: Convert to fraction form
    317,486.34/473,137.55 = 307,874.82/x
  3. Step 3: Cross multiply
    317,486.34x = 473,137.55 × 307,874.82
  4. Step 4: Simplify right side
    317,486.34x = 145,667,136,502.12
  5. Step 5: Solve for x
    x = 145,667,136,502.12/317,486.34
  6. Step 6: Final answer
    x = 458,813.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.