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Finding the Fourth Proportional to 531,886.31, 733,988.52 and 290,168.81

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Solution

The fourth proportional to 531,886.31, 733,988.52 and 290,168.81 is: 400,425.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,886.31 : 733,988.52 = 290,168.81 : x
  2. Step 2: Convert to fraction form
    531,886.31/733,988.52 = 290,168.81/x
  3. Step 3: Cross multiply
    531,886.31x = 733,988.52 × 290,168.81
  4. Step 4: Simplify right side
    531,886.31x = 212,980,571,732.12
  5. Step 5: Solve for x
    x = 212,980,571,732.12/531,886.31
  6. Step 6: Final answer
    x = 400,425.00

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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.