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Finding the Fourth Proportional to 397,258.40, 595,887.60 and 220,111.40

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Solution

The fourth proportional to 397,258.40, 595,887.60 and 220,111.40 is: 330,167.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,258.40 : 595,887.60 = 220,111.40 : x
  2. Step 2: Convert to fraction form
    397,258.40/595,887.60 = 220,111.40/x
  3. Step 3: Cross multiply
    397,258.40x = 595,887.60 × 220,111.40
  4. Step 4: Simplify right side
    397,258.40x = 131,161,653,878.64
  5. Step 5: Solve for x
    x = 131,161,653,878.64/397,258.40
  6. Step 6: Final answer
    x = 330,167.10

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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.