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Finding the Fourth Proportional to 121,279.44, 181,583.28 and 61,987.44

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Solution

The fourth proportional to 121,279.44, 181,583.28 and 61,987.44 is: 92,809.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,279.44 : 181,583.28 = 61,987.44 : x
  2. Step 2: Convert to fraction form
    121,279.44/181,583.28 = 61,987.44/x
  3. Step 3: Cross multiply
    121,279.44x = 181,583.28 × 61,987.44
  4. Step 4: Simplify right side
    121,279.44x = 11,255,882,674.00
  5. Step 5: Solve for x
    x = 11,255,882,674.00/121,279.44
  6. Step 6: Final answer
    x = 92,809.49

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1.5x scale

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.