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Finding the Fourth Proportional to 1,205,713, 1,663,961.70 and 669,169

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Solution

The fourth proportional to 1,205,713, 1,663,961.70 and 669,169 is: 923,496.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,713 : 1,663,961.70 = 669,169 : x
  2. Step 2: Convert to fraction form
    1,205,713/1,663,961.70 = 669,169/x
  3. Step 3: Cross multiply
    1,205,713x = 1,663,961.70 × 669,169
  4. Step 4: Simplify right side
    1,205,713x = 1,113,471,586,827.30
  5. Step 5: Solve for x
    x = 1,113,471,586,827.30/1,205,713
  6. Step 6: Final answer
    x = 923,496.38

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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.