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Finding the Fourth Proportional to 347,889.44, 521,838.96 and 98,571.20

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Solution

The fourth proportional to 347,889.44, 521,838.96 and 98,571.20 is: 147,858.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,889.44 : 521,838.96 = 98,571.20 : x
  2. Step 2: Convert to fraction form
    347,889.44/521,838.96 = 98,571.20/x
  3. Step 3: Cross multiply
    347,889.44x = 521,838.96 × 98,571.20
  4. Step 4: Simplify right side
    347,889.44x = 51,438,292,493.95
  5. Step 5: Solve for x
    x = 51,438,292,493.95/347,889.44
  6. Step 6: Final answer
    x = 147,858.16

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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.