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Finding the Fourth Proportional to 6,517,886.80, 9,781,495.80 and 3,674,981.20

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Solution

The fourth proportional to 6,517,886.80, 9,781,495.80 and 3,674,981.20 is: 5,515,102.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,517,886.80 : 9,781,495.80 = 3,674,981.20 : x
  2. Step 2: Convert to fraction form
    6,517,886.80/9,781,495.80 = 3,674,981.20/x
  3. Step 3: Cross multiply
    6,517,886.80x = 9,781,495.80 × 3,674,981.20
  4. Step 4: Simplify right side
    6,517,886.80x = 35,946,813,172,878.96
  5. Step 5: Solve for x
    x = 35,946,813,172,878.96/6,517,886.80
  6. Step 6: Final answer
    x = 5,515,102.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.