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Finding the Fourth Proportional to 612,876.84, 919,315.26 and 192,186.60

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Solution

The fourth proportional to 612,876.84, 919,315.26 and 192,186.60 is: 288,279.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,876.84 : 919,315.26 = 192,186.60 : x
  2. Step 2: Convert to fraction form
    612,876.84/919,315.26 = 192,186.60/x
  3. Step 3: Cross multiply
    612,876.84x = 919,315.26 × 192,186.60
  4. Step 4: Simplify right side
    612,876.84x = 176,680,074,147.52
  5. Step 5: Solve for x
    x = 176,680,074,147.52/612,876.84
  6. Step 6: Final answer
    x = 288,279.90

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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.