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Finding the Fourth Proportional to 115,919.55, 173,715.30 and 101,813.40

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Solution

The fourth proportional to 115,919.55, 173,715.30 and 101,813.40 is: 152,576.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,919.55 : 173,715.30 = 101,813.40 : x
  2. Step 2: Convert to fraction form
    115,919.55/173,715.30 = 101,813.40/x
  3. Step 3: Cross multiply
    115,919.55x = 173,715.30 × 101,813.40
  4. Step 4: Simplify right side
    115,919.55x = 17,686,545,325.02
  5. Step 5: Solve for x
    x = 17,686,545,325.02/115,919.55
  6. Step 6: Final answer
    x = 152,576.04

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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.