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Finding the Fourth Proportional to 569,095.40, 853,643.10 and 285,660.20

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Solution

The fourth proportional to 569,095.40, 853,643.10 and 285,660.20 is: 428,490.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,095.40 : 853,643.10 = 285,660.20 : x
  2. Step 2: Convert to fraction form
    569,095.40/853,643.10 = 285,660.20/x
  3. Step 3: Cross multiply
    569,095.40x = 853,643.10 × 285,660.20
  4. Step 4: Simplify right side
    569,095.40x = 243,851,858,674.62
  5. Step 5: Solve for x
    x = 243,851,858,674.62/569,095.40
  6. Step 6: Final answer
    x = 428,490.30

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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.