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Finding the Fourth Proportional to 223,329.20, 334,993.80 and 128,559.20

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Solution

The fourth proportional to 223,329.20, 334,993.80 and 128,559.20 is: 192,838.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,329.20 : 334,993.80 = 128,559.20 : x
  2. Step 2: Convert to fraction form
    223,329.20/334,993.80 = 128,559.20/x
  3. Step 3: Cross multiply
    223,329.20x = 334,993.80 × 128,559.20
  4. Step 4: Simplify right side
    223,329.20x = 43,066,534,932.96
  5. Step 5: Solve for x
    x = 43,066,534,932.96/223,329.20
  6. Step 6: Final answer
    x = 192,838.80

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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.