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Finding the Fourth Proportional to 1,197,721, 1,652,856.42 and 661,177

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Solution

The fourth proportional to 1,197,721, 1,652,856.42 and 661,177 is: 912,425.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,197,721 : 1,652,856.42 = 661,177 : x
  2. Step 2: Convert to fraction form
    1,197,721/1,652,856.42 = 661,177/x
  3. Step 3: Cross multiply
    1,197,721x = 1,652,856.42 × 661,177
  4. Step 4: Simplify right side
    1,197,721x = 1,092,830,649,206.34
  5. Step 5: Solve for x
    x = 1,092,830,649,206.34/1,197,721
  6. Step 6: Final answer
    x = 912,425.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.