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Finding the Fourth Proportional to 118,115.40, 176,913.90 and 102,563.40

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Solution

The fourth proportional to 118,115.40, 176,913.90 and 102,563.40 is: 153,620.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,115.40 : 176,913.90 = 102,563.40 : x
  2. Step 2: Convert to fraction form
    118,115.40/176,913.90 = 102,563.40/x
  3. Step 3: Cross multiply
    118,115.40x = 176,913.90 × 102,563.40
  4. Step 4: Simplify right side
    118,115.40x = 18,144,891,091.26
  5. Step 5: Solve for x
    x = 18,144,891,091.26/118,115.40
  6. Step 6: Final answer
    x = 153,620.03

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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.