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Finding the Fourth Proportional to 609,186.24, 913,877.28 and 209,728.80

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Solution

The fourth proportional to 609,186.24, 913,877.28 and 209,728.80 is: 314,626.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,186.24 : 913,877.28 = 209,728.80 : x
  2. Step 2: Convert to fraction form
    609,186.24/913,877.28 = 209,728.80/x
  3. Step 3: Cross multiply
    609,186.24x = 913,877.28 × 209,728.80
  4. Step 4: Simplify right side
    609,186.24x = 191,666,385,281.66
  5. Step 5: Solve for x
    x = 191,666,385,281.66/609,186.24
  6. Step 6: Final answer
    x = 314,626.91

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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.