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Finding the Fourth Proportional to 293,163.40, 439,745.10 and 71,547.40

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Solution

The fourth proportional to 293,163.40, 439,745.10 and 71,547.40 is: 107,321.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,163.40 : 439,745.10 = 71,547.40 : x
  2. Step 2: Convert to fraction form
    293,163.40/439,745.10 = 71,547.40/x
  3. Step 3: Cross multiply
    293,163.40x = 439,745.10 × 71,547.40
  4. Step 4: Simplify right side
    293,163.40x = 31,462,618,567.74
  5. Step 5: Solve for x
    x = 31,462,618,567.74/293,163.40
  6. Step 6: Final answer
    x = 107,321.10

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