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Finding the Fourth Proportional to 577,986.40, 866,979.60 and 204,047.20

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Solution

The fourth proportional to 577,986.40, 866,979.60 and 204,047.20 is: 306,070.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,986.40 : 866,979.60 = 204,047.20 : x
  2. Step 2: Convert to fraction form
    577,986.40/866,979.60 = 204,047.20/x
  3. Step 3: Cross multiply
    577,986.40x = 866,979.60 × 204,047.20
  4. Step 4: Simplify right side
    577,986.40x = 176,904,759,837.12
  5. Step 5: Solve for x
    x = 176,904,759,837.12/577,986.40
  6. Step 6: Final answer
    x = 306,070.80

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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.