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Finding the Fourth Proportional to 99,603.81, 149,457.56 and 40,483.17

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Solution

The fourth proportional to 99,603.81, 149,457.56 and 40,483.17 is: 60,745.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,603.81 : 149,457.56 = 40,483.17 : x
  2. Step 2: Convert to fraction form
    99,603.81/149,457.56 = 40,483.17/x
  3. Step 3: Cross multiply
    99,603.81x = 149,457.56 × 40,483.17
  4. Step 4: Simplify right side
    99,603.81x = 6,050,515,606.85
  5. Step 5: Solve for x
    x = 6,050,515,606.85/99,603.81
  6. Step 6: Final answer
    x = 60,745.82

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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.