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Finding the Fourth Proportional to 223,864.80, 308,924.46 and 128,305.32

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Solution

The fourth proportional to 223,864.80, 308,924.46 and 128,305.32 is: 177,056.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,864.80 : 308,924.46 = 128,305.32 : x
  2. Step 2: Convert to fraction form
    223,864.80/308,924.46 = 128,305.32/x
  3. Step 3: Cross multiply
    223,864.80x = 308,924.46 × 128,305.32
  4. Step 4: Simplify right side
    223,864.80x = 39,636,651,696.13
  5. Step 5: Solve for x
    x = 39,636,651,696.13/223,864.80
  6. Step 6: Final answer
    x = 177,056.20

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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.