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Finding the Fourth Proportional to 223,873.64, 308,933.54 and 128,384.36

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Solution

The fourth proportional to 223,873.64, 308,933.54 and 128,384.36 is: 177,163.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,873.64 : 308,933.54 = 128,384.36 : x
  2. Step 2: Convert to fraction form
    223,873.64/308,933.54 = 128,384.36/x
  3. Step 3: Cross multiply
    223,873.64x = 308,933.54 × 128,384.36
  4. Step 4: Simplify right side
    223,873.64x = 39,662,234,815.43
  5. Step 5: Solve for x
    x = 39,662,234,815.43/223,873.64
  6. Step 6: Final answer
    x = 177,163.49

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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.