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Finding the Fourth Proportional to 573,287.40, 859,931.10 and 199,310.40

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Solution

The fourth proportional to 573,287.40, 859,931.10 and 199,310.40 is: 298,965.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,287.40 : 859,931.10 = 199,310.40 : x
  2. Step 2: Convert to fraction form
    573,287.40/859,931.10 = 199,310.40/x
  3. Step 3: Cross multiply
    573,287.40x = 859,931.10 × 199,310.40
  4. Step 4: Simplify right side
    573,287.40x = 171,393,211,513.44
  5. Step 5: Solve for x
    x = 171,393,211,513.44/573,287.40
  6. Step 6: Final answer
    x = 298,965.60

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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.