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Finding the Fourth Proportional to 554,431.71, 831,694.74 and 155,072.76

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Solution

The fourth proportional to 554,431.71, 831,694.74 and 155,072.76 is: 232,622.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,431.71 : 831,694.74 = 155,072.76 : x
  2. Step 2: Convert to fraction form
    554,431.71/831,694.74 = 155,072.76/x
  3. Step 3: Cross multiply
    554,431.71x = 831,694.74 × 155,072.76
  4. Step 4: Simplify right side
    554,431.71x = 128,973,198,809.28
  5. Step 5: Solve for x
    x = 128,973,198,809.28/554,431.71
  6. Step 6: Final answer
    x = 232,622.33

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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.