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Finding the Fourth Proportional to 117,715.80, 176,573.70 and 75,725.40

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Solution

The fourth proportional to 117,715.80, 176,573.70 and 75,725.40 is: 113,588.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,715.80 : 176,573.70 = 75,725.40 : x
  2. Step 2: Convert to fraction form
    117,715.80/176,573.70 = 75,725.40/x
  3. Step 3: Cross multiply
    117,715.80x = 176,573.70 × 75,725.40
  4. Step 4: Simplify right side
    117,715.80x = 13,371,114,061.98
  5. Step 5: Solve for x
    x = 13,371,114,061.98/117,715.80
  6. Step 6: Final answer
    x = 113,588.10

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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.