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Finding the Fourth Proportional to 536,912.51, 805,368.78 and 221,361.21

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Solution

The fourth proportional to 536,912.51, 805,368.78 and 221,361.21 is: 332,041.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,912.51 : 805,368.78 = 221,361.21 : x
  2. Step 2: Convert to fraction form
    536,912.51/805,368.78 = 221,361.21/x
  3. Step 3: Cross multiply
    536,912.51x = 805,368.78 × 221,361.21
  4. Step 4: Simplify right side
    536,912.51x = 178,277,407,637.02
  5. Step 5: Solve for x
    x = 178,277,407,637.02/536,912.51
  6. Step 6: Final answer
    x = 332,041.82

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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.