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Finding the Fourth Proportional to 528,884.67, 729,873.54 and 287,177.43

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Solution

The fourth proportional to 528,884.67, 729,873.54 and 287,177.43 is: 396,311.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,884.67 : 729,873.54 = 287,177.43 : x
  2. Step 2: Convert to fraction form
    528,884.67/729,873.54 = 287,177.43/x
  3. Step 3: Cross multiply
    528,884.67x = 729,873.54 × 287,177.43
  4. Step 4: Simplify right side
    528,884.67x = 209,603,210,179.23
  5. Step 5: Solve for x
    x = 209,603,210,179.23/528,884.67
  6. Step 6: Final answer
    x = 396,311.75

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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.