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Finding the Fourth Proportional to 291,889.46, 402,600.45 and 189,726.49

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Solution

The fourth proportional to 291,889.46, 402,600.45 and 189,726.49 is: 261,688.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,889.46 : 402,600.45 = 189,726.49 : x
  2. Step 2: Convert to fraction form
    291,889.46/402,600.45 = 189,726.49/x
  3. Step 3: Cross multiply
    291,889.46x = 402,600.45 × 189,726.49
  4. Step 4: Simplify right side
    291,889.46x = 76,383,968,667.41
  5. Step 5: Solve for x
    x = 76,383,968,667.41/291,889.46
  6. Step 6: Final answer
    x = 261,688.00

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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.