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Finding the Fourth Proportional to 684,998.90, 945,297.15 and 383,192.90

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Solution

The fourth proportional to 684,998.90, 945,297.15 and 383,192.90 is: 528,805.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,998.90 : 945,297.15 = 383,192.90 : x
  2. Step 2: Convert to fraction form
    684,998.90/945,297.15 = 383,192.90/x
  3. Step 3: Cross multiply
    684,998.90x = 945,297.15 × 383,192.90
  4. Step 4: Simplify right side
    684,998.90x = 362,231,156,270.24
  5. Step 5: Solve for x
    x = 362,231,156,270.24/684,998.90
  6. Step 6: Final answer
    x = 528,805.46

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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.