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Finding the Fourth Proportional to 939,802.80, 1,409,704.20 and 467,410.80

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Solution

The fourth proportional to 939,802.80, 1,409,704.20 and 467,410.80 is: 701,116.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,802.80 : 1,409,704.20 = 467,410.80 : x
  2. Step 2: Convert to fraction form
    939,802.80/1,409,704.20 = 467,410.80/x
  3. Step 3: Cross multiply
    939,802.80x = 1,409,704.20 × 467,410.80
  4. Step 4: Simplify right side
    939,802.80x = 658,910,967,885.36
  5. Step 5: Solve for x
    x = 658,910,967,885.36/939,802.80
  6. Step 6: Final answer
    x = 701,116.20

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Double scale
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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.