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Finding the Fourth Proportional to 1,663,733.89, 2,295,954.31 and 899,787.45

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Solution

The fourth proportional to 1,663,733.89, 2,295,954.31 and 899,787.45 is: 1,241,707.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,663,733.89 : 2,295,954.31 = 899,787.45 : x
  2. Step 2: Convert to fraction form
    1,663,733.89/2,295,954.31 = 899,787.45/x
  3. Step 3: Cross multiply
    1,663,733.89x = 2,295,954.31 × 899,787.45
  4. Step 4: Simplify right side
    1,663,733.89x = 2,065,870,873,911.41
  5. Step 5: Solve for x
    x = 2,065,870,873,911.41/1,663,733.89
  6. Step 6: Final answer
    x = 1,241,707.51

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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.