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Finding the Fourth Proportional to 603,686.30, 905,529.45 and 363,553.70

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Solution

The fourth proportional to 603,686.30, 905,529.45 and 363,553.70 is: 545,330.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,686.30 : 905,529.45 = 363,553.70 : x
  2. Step 2: Convert to fraction form
    603,686.30/905,529.45 = 363,553.70/x
  3. Step 3: Cross multiply
    603,686.30x = 905,529.45 × 363,553.70
  4. Step 4: Simplify right side
    603,686.30x = 329,208,582,006.47
  5. Step 5: Solve for x
    x = 329,208,582,006.47/603,686.30
  6. Step 6: Final answer
    x = 545,330.55

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Similar ratio
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1.5x scale

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.