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Finding the Fourth Proportional to 64,896.66, 97,310.70 and 30,666.60

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Solution

The fourth proportional to 64,896.66, 97,310.70 and 30,666.60 is: 45,983.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,896.66 : 97,310.70 = 30,666.60 : x
  2. Step 2: Convert to fraction form
    64,896.66/97,310.70 = 30,666.60/x
  3. Step 3: Cross multiply
    64,896.66x = 97,310.70 × 30,666.60
  4. Step 4: Simplify right side
    64,896.66x = 2,984,188,312.62
  5. Step 5: Solve for x
    x = 2,984,188,312.62/64,896.66
  6. Step 6: Final answer
    x = 45,983.70

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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.