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Finding the Fourth Proportional to 3,309,957.96, 4,964,929.61 and 881,111.76

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Solution

The fourth proportional to 3,309,957.96, 4,964,929.61 and 881,111.76 is: 1,321,665.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,309,957.96 : 4,964,929.61 = 881,111.76 : x
  2. Step 2: Convert to fraction form
    3,309,957.96/4,964,929.61 = 881,111.76/x
  3. Step 3: Cross multiply
    3,309,957.96x = 4,964,929.61 × 881,111.76
  4. Step 4: Simplify right side
    3,309,957.96x = 4,374,657,862,537.66
  5. Step 5: Solve for x
    x = 4,374,657,862,537.66/3,309,957.96
  6. Step 6: Final answer
    x = 1,321,665.69

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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.