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Finding the Fourth Proportional to 719,602.65, 993,067.15 and 397,333.15

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Solution

The fourth proportional to 719,602.65, 993,067.15 and 397,333.15 is: 548,328.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,602.65 : 993,067.15 = 397,333.15 : x
  2. Step 2: Convert to fraction form
    719,602.65/993,067.15 = 397,333.15/x
  3. Step 3: Cross multiply
    719,602.65x = 993,067.15 × 397,333.15
  4. Step 4: Simplify right side
    719,602.65x = 394,578,498,871.02
  5. Step 5: Solve for x
    x = 394,578,498,871.02/719,602.65
  6. Step 6: Final answer
    x = 548,328.30

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.