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Finding the Fourth Proportional to 111,555.89, 153,893.08 and 73,861.73

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Solution

The fourth proportional to 111,555.89, 153,893.08 and 73,861.73 is: 101,893.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,555.89 : 153,893.08 = 73,861.73 : x
  2. Step 2: Convert to fraction form
    111,555.89/153,893.08 = 73,861.73/x
  3. Step 3: Cross multiply
    111,555.89x = 153,893.08 × 73,861.73
  4. Step 4: Simplify right side
    111,555.89x = 11,366,809,123.83
  5. Step 5: Solve for x
    x = 11,366,809,123.83/111,555.89
  6. Step 6: Final answer
    x = 101,893.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.