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Finding the Fourth Proportional to 622,890.60, 934,335.90 and 611,080.80

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Solution

The fourth proportional to 622,890.60, 934,335.90 and 611,080.80 is: 916,621.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,890.60 : 934,335.90 = 611,080.80 : x
  2. Step 2: Convert to fraction form
    622,890.60/934,335.90 = 611,080.80/x
  3. Step 3: Cross multiply
    622,890.60x = 934,335.90 × 611,080.80
  4. Step 4: Simplify right side
    622,890.60x = 570,954,729,240.72
  5. Step 5: Solve for x
    x = 570,954,729,240.72/622,890.60
  6. Step 6: Final answer
    x = 916,621.20

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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.