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Finding the Fourth Proportional to 64,910.70, 97,310.70 and 25,458.57

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Solution

The fourth proportional to 64,910.70, 97,310.70 and 25,458.57 is: 38,166.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,910.70 : 97,310.70 = 25,458.57 : x
  2. Step 2: Convert to fraction form
    64,910.70/97,310.70 = 25,458.57/x
  3. Step 3: Cross multiply
    64,910.70x = 97,310.70 × 25,458.57
  4. Step 4: Simplify right side
    64,910.70x = 2,477,391,267.70
  5. Step 5: Solve for x
    x = 2,477,391,267.70/64,910.70
  6. Step 6: Final answer
    x = 38,166.15

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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.