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Finding the Fourth Proportional to 418,803.50, 626,620.01 and 248,116.86

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Solution

The fourth proportional to 418,803.50, 626,620.01 and 248,116.86 is: 371,236.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,803.50 : 626,620.01 = 248,116.86 : x
  2. Step 2: Convert to fraction form
    418,803.50/626,620.01 = 248,116.86/x
  3. Step 3: Cross multiply
    418,803.50x = 626,620.01 × 248,116.86
  4. Step 4: Simplify right side
    418,803.50x = 155,474,988,053.78
  5. Step 5: Solve for x
    x = 155,474,988,053.78/418,803.50
  6. Step 6: Final answer
    x = 371,236.13

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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.