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Finding the Fourth Proportional to 582,003.40, 873,005.10 and 395,379.40

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Solution

The fourth proportional to 582,003.40, 873,005.10 and 395,379.40 is: 593,069.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,003.40 : 873,005.10 = 395,379.40 : x
  2. Step 2: Convert to fraction form
    582,003.40/873,005.10 = 395,379.40/x
  3. Step 3: Cross multiply
    582,003.40x = 873,005.10 × 395,379.40
  4. Step 4: Simplify right side
    582,003.40x = 345,168,232,634.94
  5. Step 5: Solve for x
    x = 345,168,232,634.94/582,003.40
  6. Step 6: Final answer
    x = 593,069.10

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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.