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Finding the Fourth Proportional to 104,697.75, 144,418.10 and 91,301.16

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Solution

The fourth proportional to 104,697.75, 144,418.10 and 91,301.16 is: 125,939.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,697.75 : 144,418.10 = 91,301.16 : x
  2. Step 2: Convert to fraction form
    104,697.75/144,418.10 = 91,301.16/x
  3. Step 3: Cross multiply
    104,697.75x = 144,418.10 × 91,301.16
  4. Step 4: Simplify right side
    104,697.75x = 13,185,540,055.00
  5. Step 5: Solve for x
    x = 13,185,540,055.00/104,697.75
  6. Step 6: Final answer
    x = 125,939.10

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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.