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Finding the Fourth Proportional to 78,057.15, 116,910.63 and 60,473.67

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Solution

The fourth proportional to 78,057.15, 116,910.63 and 60,473.67 is: 90,574.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,057.15 : 116,910.63 = 60,473.67 : x
  2. Step 2: Convert to fraction form
    78,057.15/116,910.63 = 60,473.67/x
  3. Step 3: Cross multiply
    78,057.15x = 116,910.63 × 60,473.67
  4. Step 4: Simplify right side
    78,057.15x = 7,070,014,858.11
  5. Step 5: Solve for x
    x = 7,070,014,858.11/78,057.15
  6. Step 6: Final answer
    x = 90,574.85

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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.