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Finding the Fourth Proportional to 212,889.48, 319,241.52 and 61,053.08

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Solution

The fourth proportional to 212,889.48, 319,241.52 and 61,053.08 is: 91,553.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,889.48 : 319,241.52 = 61,053.08 : x
  2. Step 2: Convert to fraction form
    212,889.48/319,241.52 = 61,053.08/x
  3. Step 3: Cross multiply
    212,889.48x = 319,241.52 × 61,053.08
  4. Step 4: Simplify right side
    212,889.48x = 19,490,678,059.88
  5. Step 5: Solve for x
    x = 19,490,678,059.88/212,889.48
  6. Step 6: Final answer
    x = 91,553.04

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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.