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Finding the Fourth Proportional to 193,365.42, 290,036.40 and 114,978.48

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Solution

The fourth proportional to 193,365.42, 290,036.40 and 114,978.48 is: 172,460.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,365.42 : 290,036.40 = 114,978.48 : x
  2. Step 2: Convert to fraction form
    193,365.42/290,036.40 = 114,978.48/x
  3. Step 3: Cross multiply
    193,365.42x = 290,036.40 × 114,978.48
  4. Step 4: Simplify right side
    193,365.42x = 33,347,944,416.67
  5. Step 5: Solve for x
    x = 33,347,944,416.67/193,365.42
  6. Step 6: Final answer
    x = 172,460.75

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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.