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Finding the Fourth Proportional to 418,798.34, 626,612.26 and 248,111.69

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Solution

The fourth proportional to 418,798.34, 626,612.26 and 248,111.69 is: 371,228.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,798.34 : 626,612.26 = 248,111.69 : x
  2. Step 2: Convert to fraction form
    418,798.34/626,612.26 = 248,111.69/x
  3. Step 3: Cross multiply
    418,798.34x = 626,612.26 × 248,111.69
  4. Step 4: Simplify right side
    418,798.34x = 155,469,827,749.57
  5. Step 5: Solve for x
    x = 155,469,827,749.57/418,798.34
  6. Step 6: Final answer
    x = 371,228.37

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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.