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Finding the Fourth Proportional to 418,222.71, 626,981.40 and 181,387.01

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Solution

The fourth proportional to 418,222.71, 626,981.40 and 181,387.01 is: 271,927.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,222.71 : 626,981.40 = 181,387.01 : x
  2. Step 2: Convert to fraction form
    418,222.71/626,981.40 = 181,387.01/x
  3. Step 3: Cross multiply
    418,222.71x = 626,981.40 × 181,387.01
  4. Step 4: Simplify right side
    418,222.71x = 113,726,278,336.71
  5. Step 5: Solve for x
    x = 113,726,278,336.71/418,222.71
  6. Step 6: Final answer
    x = 271,927.55

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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.