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Finding the Fourth Proportional to 644,670.51, 967,004.70 and 171,355.87

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Solution

The fourth proportional to 644,670.51, 967,004.70 and 171,355.87 is: 257,033.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,670.51 : 967,004.70 = 171,355.87 : x
  2. Step 2: Convert to fraction form
    644,670.51/967,004.70 = 171,355.87/x
  3. Step 3: Cross multiply
    644,670.51x = 967,004.70 × 171,355.87
  4. Step 4: Simplify right side
    644,670.51x = 165,701,931,662.59
  5. Step 5: Solve for x
    x = 165,701,931,662.59/644,670.51
  6. Step 6: Final answer
    x = 257,033.52

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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.