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Finding the Fourth Proportional to 193,673.21, 290,526.55 and 53,431.83

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Solution

The fourth proportional to 193,673.21, 290,526.55 and 53,431.83 is: 80,152.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,673.21 : 290,526.55 = 53,431.83 : x
  2. Step 2: Convert to fraction form
    193,673.21/290,526.55 = 53,431.83/x
  3. Step 3: Cross multiply
    193,673.21x = 290,526.55 × 53,431.83
  4. Step 4: Simplify right side
    193,673.21x = 15,523,364,962.93
  5. Step 5: Solve for x
    x = 15,523,364,962.93/193,673.21
  6. Step 6: Final answer
    x = 80,152.36

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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.