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Finding the Fourth Proportional to 684,997.90, 945,295.77 and 383,191.90

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Solution

The fourth proportional to 684,997.90, 945,295.77 and 383,191.90 is: 528,804.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,997.90 : 945,295.77 = 383,191.90 : x
  2. Step 2: Convert to fraction form
    684,997.90/945,295.77 = 383,191.90/x
  3. Step 3: Cross multiply
    684,997.90x = 945,295.77 × 383,191.90
  4. Step 4: Simplify right side
    684,997.90x = 362,229,682,168.26
  5. Step 5: Solve for x
    x = 362,229,682,168.26/684,997.90
  6. Step 6: Final answer
    x = 528,804.08

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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.