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Finding the Fourth Proportional to 719,602.90, 993,067.49 and 397,333.40

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Solution

The fourth proportional to 719,602.90, 993,067.49 and 397,333.40 is: 548,328.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,602.90 : 993,067.49 = 397,333.40 : x
  2. Step 2: Convert to fraction form
    719,602.90/993,067.49 = 397,333.40/x
  3. Step 3: Cross multiply
    719,602.90x = 993,067.49 × 397,333.40
  4. Step 4: Simplify right side
    719,602.90x = 394,578,878,259.16
  5. Step 5: Solve for x
    x = 394,578,878,259.16/719,602.90
  6. Step 6: Final answer
    x = 548,328.64

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Double scale
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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.