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Finding the Fourth Proportional to 554,214.28, 831,321.42 and 133,490.16

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Solution

The fourth proportional to 554,214.28, 831,321.42 and 133,490.16 is: 200,235.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,214.28 : 831,321.42 = 133,490.16 : x
  2. Step 2: Convert to fraction form
    554,214.28/831,321.42 = 133,490.16/x
  3. Step 3: Cross multiply
    554,214.28x = 831,321.42 × 133,490.16
  4. Step 4: Simplify right side
    554,214.28x = 110,973,226,500.07
  5. Step 5: Solve for x
    x = 110,973,226,500.07/554,214.28
  6. Step 6: Final answer
    x = 200,235.23

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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.