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Finding the Fourth Proportional to 620,953.54, 931,791.74 and 261,098.34

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Solution

The fourth proportional to 620,953.54, 931,791.74 and 261,098.34 is: 391,799.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,953.54 : 931,791.74 = 261,098.34 : x
  2. Step 2: Convert to fraction form
    620,953.54/931,791.74 = 261,098.34/x
  3. Step 3: Cross multiply
    620,953.54x = 931,791.74 × 261,098.34
  4. Step 4: Simplify right side
    620,953.54x = 243,289,276,539.71
  5. Step 5: Solve for x
    x = 243,289,276,539.71/620,953.54
  6. Step 6: Final answer
    x = 391,799.48

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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.