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Finding the Fourth Proportional to 554,539.52, 831,809.36 and 133,815.40

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Solution

The fourth proportional to 554,539.52, 831,809.36 and 133,815.40 is: 200,723.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,539.52 : 831,809.36 = 133,815.40 : x
  2. Step 2: Convert to fraction form
    554,539.52/831,809.36 = 133,815.40/x
  3. Step 3: Cross multiply
    554,539.52x = 831,809.36 × 133,815.40
  4. Step 4: Simplify right side
    554,539.52x = 111,308,902,232.14
  5. Step 5: Solve for x
    x = 111,308,902,232.14/554,539.52
  6. Step 6: Final answer
    x = 200,723.12

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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.