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Finding the Fourth Proportional to 177,676.80, 266,077.80 and 118,190.40

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Solution

The fourth proportional to 177,676.80, 266,077.80 and 118,190.40 is: 176,994.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,676.80 : 266,077.80 = 118,190.40 : x
  2. Step 2: Convert to fraction form
    177,676.80/266,077.80 = 118,190.40/x
  3. Step 3: Cross multiply
    177,676.80x = 266,077.80 × 118,190.40
  4. Step 4: Simplify right side
    177,676.80x = 31,447,841,613.12
  5. Step 5: Solve for x
    x = 31,447,841,613.12/177,676.80
  6. Step 6: Final answer
    x = 176,994.64

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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.