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Finding the Fourth Proportional to 1,188,696, 1,640,429.28 and 652,152

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Solution

The fourth proportional to 1,188,696, 1,640,429.28 and 652,152 is: 899,985.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,696 : 1,640,429.28 = 652,152 : x
  2. Step 2: Convert to fraction form
    1,188,696/1,640,429.28 = 652,152/x
  3. Step 3: Cross multiply
    1,188,696x = 1,640,429.28 × 652,152
  4. Step 4: Simplify right side
    1,188,696x = 1,069,809,235,810.56
  5. Step 5: Solve for x
    x = 1,069,809,235,810.56/1,188,696
  6. Step 6: Final answer
    x = 899,985.56

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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.