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Finding the Fourth Proportional to 521,539.89, 719,665.51 and 292,065.27

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Solution

The fourth proportional to 521,539.89, 719,665.51 and 292,065.27 is: 403,016.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,539.89 : 719,665.51 = 292,065.27 : x
  2. Step 2: Convert to fraction form
    521,539.89/719,665.51 = 292,065.27/x
  3. Step 3: Cross multiply
    521,539.89x = 719,665.51 × 292,065.27
  4. Step 4: Simplify right side
    521,539.89x = 210,189,301,487.84
  5. Step 5: Solve for x
    x = 210,189,301,487.84/521,539.89
  6. Step 6: Final answer
    x = 403,016.73

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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.