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Finding the Fourth Proportional to 67,661.15, 101,516.03 and 28,230.35

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Solution

The fourth proportional to 67,661.15, 101,516.03 and 28,230.35 is: 42,355.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,661.15 : 101,516.03 = 28,230.35 : x
  2. Step 2: Convert to fraction form
    67,661.15/101,516.03 = 28,230.35/x
  3. Step 3: Cross multiply
    67,661.15x = 101,516.03 × 28,230.35
  4. Step 4: Simplify right side
    67,661.15x = 2,865,833,057.51
  5. Step 5: Solve for x
    x = 2,865,833,057.51/67,661.15
  6. Step 6: Final answer
    x = 42,355.67

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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.