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Finding the Fourth Proportional to 111,322.40, 167,003.85 and 36,421.70

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Solution

The fourth proportional to 111,322.40, 167,003.85 and 36,421.70 is: 54,639.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,322.40 : 167,003.85 = 36,421.70 : x
  2. Step 2: Convert to fraction form
    111,322.40/167,003.85 = 36,421.70/x
  3. Step 3: Cross multiply
    111,322.40x = 167,003.85 × 36,421.70
  4. Step 4: Simplify right side
    111,322.40x = 6,082,564,123.55
  5. Step 5: Solve for x
    x = 6,082,564,123.55/111,322.40
  6. Step 6: Final answer
    x = 54,639.18

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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.