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Finding the Fourth Proportional to 662,720.20, 994,080.30 and 611,398.60

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Solution

The fourth proportional to 662,720.20, 994,080.30 and 611,398.60 is: 917,097.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,720.20 : 994,080.30 = 611,398.60 : x
  2. Step 2: Convert to fraction form
    662,720.20/994,080.30 = 611,398.60/x
  3. Step 3: Cross multiply
    662,720.20x = 994,080.30 × 611,398.60
  4. Step 4: Simplify right side
    662,720.20x = 607,779,303,707.58
  5. Step 5: Solve for x
    x = 607,779,303,707.58/662,720.20
  6. Step 6: Final answer
    x = 917,097.90

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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.