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Finding the Fourth Proportional to 118,075.28, 176,916.04 and 84,745.40

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Solution

The fourth proportional to 118,075.28, 176,916.04 and 84,745.40 is: 126,976.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,075.28 : 176,916.04 = 84,745.40 : x
  2. Step 2: Convert to fraction form
    118,075.28/176,916.04 = 84,745.40/x
  3. Step 3: Cross multiply
    118,075.28x = 176,916.04 × 84,745.40
  4. Step 4: Simplify right side
    118,075.28x = 14,992,820,576.22
  5. Step 5: Solve for x
    x = 14,992,820,576.22/118,075.28
  6. Step 6: Final answer
    x = 126,976.79

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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.