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Finding the Fourth Proportional to 118,075.80, 177,113.70 and 94,747.80

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Solution

The fourth proportional to 118,075.80, 177,113.70 and 94,747.80 is: 142,121.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,075.80 : 177,113.70 = 94,747.80 : x
  2. Step 2: Convert to fraction form
    118,075.80/177,113.70 = 94,747.80/x
  3. Step 3: Cross multiply
    118,075.80x = 177,113.70 × 94,747.80
  4. Step 4: Simplify right side
    118,075.80x = 16,781,133,424.86
  5. Step 5: Solve for x
    x = 16,781,133,424.86/118,075.80
  6. Step 6: Final answer
    x = 142,121.70

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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.