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Finding the Fourth Proportional to 454,362.49, 626,652.15 and 399,796.84

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Solution

The fourth proportional to 454,362.49, 626,652.15 and 399,796.84 is: 551,395.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,362.49 : 626,652.15 = 399,796.84 : x
  2. Step 2: Convert to fraction form
    454,362.49/626,652.15 = 399,796.84/x
  3. Step 3: Cross multiply
    454,362.49x = 626,652.15 × 399,796.84
  4. Step 4: Simplify right side
    454,362.49x = 250,533,549,349.21
  5. Step 5: Solve for x
    x = 250,533,549,349.21/454,362.49
  6. Step 6: Final answer
    x = 551,395.76

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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.