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Finding the Fourth Proportional to 223,533.46, 308,463.71 and 128,046.31

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Solution

The fourth proportional to 223,533.46, 308,463.71 and 128,046.31 is: 176,696.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,533.46 : 308,463.71 = 128,046.31 : x
  2. Step 2: Convert to fraction form
    223,533.46/308,463.71 = 128,046.31/x
  3. Step 3: Cross multiply
    223,533.46x = 308,463.71 × 128,046.31
  4. Step 4: Simplify right side
    223,533.46x = 39,497,639,143.28
  5. Step 5: Solve for x
    x = 39,497,639,143.28/223,533.46
  6. Step 6: Final answer
    x = 176,696.76

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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.