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Finding the Fourth Proportional to 111,093.98, 153,266.87 and 77,085.44

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Solution

The fourth proportional to 111,093.98, 153,266.87 and 77,085.44 is: 106,348.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,093.98 : 153,266.87 = 77,085.44 : x
  2. Step 2: Convert to fraction form
    111,093.98/153,266.87 = 77,085.44/x
  3. Step 3: Cross multiply
    111,093.98x = 153,266.87 × 77,085.44
  4. Step 4: Simplify right side
    111,093.98x = 11,814,644,974.63
  5. Step 5: Solve for x
    x = 11,814,644,974.63/111,093.98
  6. Step 6: Final answer
    x = 106,348.21

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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.