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Finding the Fourth Proportional to 223,636.01, 308,625.80 and 128,161.17

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Solution

The fourth proportional to 223,636.01, 308,625.80 and 128,161.17 is: 176,867.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,636.01 : 308,625.80 = 128,161.17 : x
  2. Step 2: Convert to fraction form
    223,636.01/308,625.80 = 128,161.17/x
  3. Step 3: Cross multiply
    223,636.01x = 308,625.80 × 128,161.17
  4. Step 4: Simplify right side
    223,636.01x = 39,553,842,979.38
  5. Step 5: Solve for x
    x = 39,553,842,979.38/223,636.01
  6. Step 6: Final answer
    x = 176,867.06

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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.