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Finding the Fourth Proportional to 5,959,007.80, 8,938,511.70 and 3,119,990.20

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Solution

The fourth proportional to 5,959,007.80, 8,938,511.70 and 3,119,990.20 is: 4,679,985.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,959,007.80 : 8,938,511.70 = 3,119,990.20 : x
  2. Step 2: Convert to fraction form
    5,959,007.80/8,938,511.70 = 3,119,990.20/x
  3. Step 3: Cross multiply
    5,959,007.80x = 8,938,511.70 × 3,119,990.20
  4. Step 4: Simplify right side
    5,959,007.80x = 27,888,068,906,585.34
  5. Step 5: Solve for x
    x = 27,888,068,906,585.34/5,959,007.80
  6. Step 6: Final answer
    x = 4,679,985.30

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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.