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Finding the Fourth Proportional to 939,696, 1,297,856.88 and 618,840.24

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Solution

The fourth proportional to 939,696, 1,297,856.88 and 618,840.24 is: 854,708.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,696 : 1,297,856.88 = 618,840.24 : x
  2. Step 2: Convert to fraction form
    939,696/1,297,856.88 = 618,840.24/x
  3. Step 3: Cross multiply
    939,696x = 1,297,856.88 × 618,840.24
  4. Step 4: Simplify right side
    939,696x = 803,166,063,104.85
  5. Step 5: Solve for x
    x = 803,166,063,104.85/939,696
  6. Step 6: Final answer
    x = 854,708.40

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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.