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Finding the Fourth Proportional to 127,977.44, 176,578.80 and 77,666.72

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Solution

The fourth proportional to 127,977.44, 176,578.80 and 77,666.72 is: 107,161.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,977.44 : 176,578.80 = 77,666.72 : x
  2. Step 2: Convert to fraction form
    127,977.44/176,578.80 = 77,666.72/x
  3. Step 3: Cross multiply
    127,977.44x = 176,578.80 × 77,666.72
  4. Step 4: Simplify right side
    127,977.44x = 13,714,296,217.54
  5. Step 5: Solve for x
    x = 13,714,296,217.54/127,977.44
  6. Step 6: Final answer
    x = 107,161.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.