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Finding the Fourth Proportional to 64,861.36, 97,292.40 and 18,114.40

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Solution

The fourth proportional to 64,861.36, 97,292.40 and 18,114.40 is: 27,171.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,861.36 : 97,292.40 = 18,114.40 : x
  2. Step 2: Convert to fraction form
    64,861.36/97,292.40 = 18,114.40/x
  3. Step 3: Cross multiply
    64,861.36x = 97,292.40 × 18,114.40
  4. Step 4: Simplify right side
    64,861.36x = 1,762,393,450.56
  5. Step 5: Solve for x
    x = 1,762,393,450.56/64,861.36
  6. Step 6: Final answer
    x = 27,171.70

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1.5x scale

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.