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Finding the Fourth Proportional to 446,803.17, 670,248.61 and 126,969.80

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Solution

The fourth proportional to 446,803.17, 670,248.61 and 126,969.80 is: 190,467.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,803.17 : 670,248.61 = 126,969.80 : x
  2. Step 2: Convert to fraction form
    446,803.17/670,248.61 = 126,969.80/x
  3. Step 3: Cross multiply
    446,803.17x = 670,248.61 × 126,969.80
  4. Step 4: Simplify right side
    446,803.17x = 85,101,328,293.31
  5. Step 5: Solve for x
    x = 85,101,328,293.31/446,803.17
  6. Step 6: Final answer
    x = 190,467.15

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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.