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Finding the Fourth Proportional to 482,203.78, 721,886.76 and 321,882.06

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Solution

The fourth proportional to 482,203.78, 721,886.76 and 321,882.06 is: 481,875.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,203.78 : 721,886.76 = 321,882.06 : x
  2. Step 2: Convert to fraction form
    482,203.78/721,886.76 = 321,882.06/x
  3. Step 3: Cross multiply
    482,203.78x = 721,886.76 × 321,882.06
  4. Step 4: Simplify right side
    482,203.78x = 232,362,395,895.51
  5. Step 5: Solve for x
    x = 232,362,395,895.51/482,203.78
  6. Step 6: Final answer
    x = 481,875.93

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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.