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Finding the Fourth Proportional to 664,708.36, 916,372.63 and 561,769.36

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Solution

The fourth proportional to 664,708.36, 916,372.63 and 561,769.36 is: 774,460.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,708.36 : 916,372.63 = 561,769.36 : x
  2. Step 2: Convert to fraction form
    664,708.36/916,372.63 = 561,769.36/x
  3. Step 3: Cross multiply
    664,708.36x = 916,372.63 × 561,769.36
  4. Step 4: Simplify right side
    664,708.36x = 514,790,065,876.62
  5. Step 5: Solve for x
    x = 514,790,065,876.62/664,708.36
  6. Step 6: Final answer
    x = 774,460.04

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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.