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Finding the Fourth Proportional to 590,521.80, 885,782.70 and 391,067.40

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Solution

The fourth proportional to 590,521.80, 885,782.70 and 391,067.40 is: 586,601.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,521.80 : 885,782.70 = 391,067.40 : x
  2. Step 2: Convert to fraction form
    590,521.80/885,782.70 = 391,067.40/x
  3. Step 3: Cross multiply
    590,521.80x = 885,782.70 × 391,067.40
  4. Step 4: Simplify right side
    590,521.80x = 346,400,737,453.98
  5. Step 5: Solve for x
    x = 346,400,737,453.98/590,521.80
  6. Step 6: Final answer
    x = 586,601.10

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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.