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Finding the Fourth Proportional to 193,718.79, 290,036.90 and 104,653.22

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Solution

The fourth proportional to 193,718.79, 290,036.90 and 104,653.22 is: 156,687.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,718.79 : 290,036.90 = 104,653.22 : x
  2. Step 2: Convert to fraction form
    193,718.79/290,036.90 = 104,653.22/x
  3. Step 3: Cross multiply
    193,718.79x = 290,036.90 × 104,653.22
  4. Step 4: Simplify right side
    193,718.79x = 30,353,294,315.27
  5. Step 5: Solve for x
    x = 30,353,294,315.27/193,718.79
  6. Step 6: Final answer
    x = 156,687.40

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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.