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Finding the Fourth Proportional to 255,644.54, 353,427.20 and 191,871.62

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Solution

The fourth proportional to 255,644.54, 353,427.20 and 191,871.62 is: 265,261.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,644.54 : 353,427.20 = 191,871.62 : x
  2. Step 2: Convert to fraction form
    255,644.54/353,427.20 = 191,871.62/x
  3. Step 3: Cross multiply
    255,644.54x = 353,427.20 × 191,871.62
  4. Step 4: Simplify right side
    255,644.54x = 67,812,649,416.06
  5. Step 5: Solve for x
    x = 67,812,649,416.06/255,644.54
  6. Step 6: Final answer
    x = 265,261.48

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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.