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Finding the Fourth Proportional to 78,460.44, 108,279.36 and 48,247.44

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Solution

The fourth proportional to 78,460.44, 108,279.36 and 48,247.44 is: 66,583.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,460.44 : 108,279.36 = 48,247.44 : x
  2. Step 2: Convert to fraction form
    78,460.44/108,279.36 = 48,247.44/x
  3. Step 3: Cross multiply
    78,460.44x = 108,279.36 × 48,247.44
  4. Step 4: Simplify right side
    78,460.44x = 5,224,201,924.84
  5. Step 5: Solve for x
    x = 5,224,201,924.84/78,460.44
  6. Step 6: Final answer
    x = 66,583.90

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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.