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Finding the Fourth Proportional to 85,884.64, 128,813.10 and 23,540.56

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Solution

The fourth proportional to 85,884.64, 128,813.10 and 23,540.56 is: 35,307.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,884.64 : 128,813.10 = 23,540.56 : x
  2. Step 2: Convert to fraction form
    85,884.64/128,813.10 = 23,540.56/x
  3. Step 3: Cross multiply
    85,884.64x = 128,813.10 × 23,540.56
  4. Step 4: Simplify right side
    85,884.64x = 3,032,332,509.34
  5. Step 5: Solve for x
    x = 3,032,332,509.34/85,884.64
  6. Step 6: Final answer
    x = 35,307.04

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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.