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Finding the Fourth Proportional to 564,165.48, 846,388.32 and 279,989.40

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Solution

The fourth proportional to 564,165.48, 846,388.32 and 279,989.40 is: 420,053.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,165.48 : 846,388.32 = 279,989.40 : x
  2. Step 2: Convert to fraction form
    564,165.48/846,388.32 = 279,989.40/x
  3. Step 3: Cross multiply
    564,165.48x = 846,388.32 × 279,989.40
  4. Step 4: Simplify right side
    564,165.48x = 236,979,757,883.81
  5. Step 5: Solve for x
    x = 236,979,757,883.81/564,165.48
  6. Step 6: Final answer
    x = 420,053.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.