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Finding the Fourth Proportional to 505,547.33, 697,660.05 and 287,745.36

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Solution

The fourth proportional to 505,547.33, 697,660.05 and 287,745.36 is: 397,091.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,547.33 : 697,660.05 = 287,745.36 : x
  2. Step 2: Convert to fraction form
    505,547.33/697,660.05 = 287,745.36/x
  3. Step 3: Cross multiply
    505,547.33x = 697,660.05 × 287,745.36
  4. Step 4: Simplify right side
    505,547.33x = 200,748,442,244.87
  5. Step 5: Solve for x
    x = 200,748,442,244.87/505,547.33
  6. Step 6: Final answer
    x = 397,091.30

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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.