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Finding the Fourth Proportional to 403,603.40, 605,145.90 and 167,040.20

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Solution

The fourth proportional to 403,603.40, 605,145.90 and 167,040.20 is: 250,453.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,603.40 : 605,145.90 = 167,040.20 : x
  2. Step 2: Convert to fraction form
    403,603.40/605,145.90 = 167,040.20/x
  3. Step 3: Cross multiply
    403,603.40x = 605,145.90 × 167,040.20
  4. Step 4: Simplify right side
    403,603.40x = 101,083,692,165.18
  5. Step 5: Solve for x
    x = 101,083,692,165.18/403,603.40
  6. Step 6: Final answer
    x = 250,453.02

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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.