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Finding the Fourth Proportional to 590,717.40, 886,076.10 and 389,950.80

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Solution

The fourth proportional to 590,717.40, 886,076.10 and 389,950.80 is: 584,926.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,717.40 : 886,076.10 = 389,950.80 : x
  2. Step 2: Convert to fraction form
    590,717.40/886,076.10 = 389,950.80/x
  3. Step 3: Cross multiply
    590,717.40x = 886,076.10 × 389,950.80
  4. Step 4: Simplify right side
    590,717.40x = 345,526,084,055.88
  5. Step 5: Solve for x
    x = 345,526,084,055.88/590,717.40
  6. Step 6: Final answer
    x = 584,926.20

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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.