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Finding the Fourth Proportional to 111,763.87, 154,291.26 and 86,212.88

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Solution

The fourth proportional to 111,763.87, 154,291.26 and 86,212.88 is: 119,017.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,763.87 : 154,291.26 = 86,212.88 : x
  2. Step 2: Convert to fraction form
    111,763.87/154,291.26 = 86,212.88/x
  3. Step 3: Cross multiply
    111,763.87x = 154,291.26 × 86,212.88
  4. Step 4: Simplify right side
    111,763.87x = 13,301,893,883.43
  5. Step 5: Solve for x
    x = 13,301,893,883.43/111,763.87
  6. Step 6: Final answer
    x = 119,017.84

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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.