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Finding the Fourth Proportional to 382,311.75, 527,590.85 and 212,545.88

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Solution

The fourth proportional to 382,311.75, 527,590.85 and 212,545.88 is: 293,313.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,311.75 : 527,590.85 = 212,545.88 : x
  2. Step 2: Convert to fraction form
    382,311.75/527,590.85 = 212,545.88/x
  3. Step 3: Cross multiply
    382,311.75x = 527,590.85 × 212,545.88
  4. Step 4: Simplify right side
    382,311.75x = 112,137,257,792.51
  5. Step 5: Solve for x
    x = 112,137,257,792.51/382,311.75
  6. Step 6: Final answer
    x = 293,313.66

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1.5x scale

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.