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Finding the Fourth Proportional to 621,635.58, 857,855.82 and 349,703.67

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Solution

The fourth proportional to 621,635.58, 857,855.82 and 349,703.67 is: 482,590.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,635.58 : 857,855.82 = 349,703.67 : x
  2. Step 2: Convert to fraction form
    621,635.58/857,855.82 = 349,703.67/x
  3. Step 3: Cross multiply
    621,635.58x = 857,855.82 × 349,703.67
  4. Step 4: Simplify right side
    621,635.58x = 299,995,328,584.86
  5. Step 5: Solve for x
    x = 299,995,328,584.86/621,635.58
  6. Step 6: Final answer
    x = 482,590.34

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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.