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Finding the Fourth Proportional to 577,220.20, 864,080.70 and 436,085.80

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Solution

The fourth proportional to 577,220.20, 864,080.70 and 436,085.80 is: 652,806.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,220.20 : 864,080.70 = 436,085.80 : x
  2. Step 2: Convert to fraction form
    577,220.20/864,080.70 = 436,085.80/x
  3. Step 3: Cross multiply
    577,220.20x = 864,080.70 × 436,085.80
  4. Step 4: Simplify right side
    577,220.20x = 376,813,323,324.06
  5. Step 5: Solve for x
    x = 376,813,323,324.06/577,220.20
  6. Step 6: Final answer
    x = 652,806.89

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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.