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Finding the Fourth Proportional to 223,980.56, 336,078.57 and 139,719.09

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Solution

The fourth proportional to 223,980.56, 336,078.57 and 139,719.09 is: 209,645.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,980.56 : 336,078.57 = 139,719.09 : x
  2. Step 2: Convert to fraction form
    223,980.56/336,078.57 = 139,719.09/x
  3. Step 3: Cross multiply
    223,980.56x = 336,078.57 × 139,719.09
  4. Step 4: Simplify right side
    223,980.56x = 46,956,591,968.90
  5. Step 5: Solve for x
    x = 46,956,591,968.90/223,980.56
  6. Step 6: Final answer
    x = 209,645.84

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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.