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Finding the Fourth Proportional to 447,211.77, 670,821.65 and 127,363.35

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Solution

The fourth proportional to 447,211.77, 670,821.65 and 127,363.35 is: 191,046.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,211.77 : 670,821.65 = 127,363.35 : x
  2. Step 2: Convert to fraction form
    447,211.77/670,821.65 = 127,363.35/x
  3. Step 3: Cross multiply
    447,211.77x = 670,821.65 × 127,363.35
  4. Step 4: Simplify right side
    447,211.77x = 85,438,091,959.71
  5. Step 5: Solve for x
    x = 85,438,091,959.71/447,211.77
  6. Step 6: Final answer
    x = 191,046.16

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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.