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Finding the Fourth Proportional to 644,675.51, 967,012.20 and 171,360.87

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Solution

The fourth proportional to 644,675.51, 967,012.20 and 171,360.87 is: 257,041.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,675.51 : 967,012.20 = 171,360.87 : x
  2. Step 2: Convert to fraction form
    644,675.51/967,012.20 = 171,360.87/x
  3. Step 3: Cross multiply
    644,675.51x = 967,012.20 × 171,360.87
  4. Step 4: Simplify right side
    644,675.51x = 165,708,051,892.61
  5. Step 5: Solve for x
    x = 165,708,051,892.61/644,675.51
  6. Step 6: Final answer
    x = 257,041.02

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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.