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Finding the Fourth Proportional to 425,024.61, 637,136.16 and 211,590.82

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Solution

The fourth proportional to 425,024.61, 637,136.16 and 211,590.82 is: 317,186.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,024.61 : 637,136.16 = 211,590.82 : x
  2. Step 2: Convert to fraction form
    425,024.61/637,136.16 = 211,590.82/x
  3. Step 3: Cross multiply
    425,024.61x = 637,136.16 × 211,590.82
  4. Step 4: Simplify right side
    425,024.61x = 134,812,162,546.05
  5. Step 5: Solve for x
    x = 134,812,162,546.05/425,024.61
  6. Step 6: Final answer
    x = 317,186.72

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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.