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Finding the Fourth Proportional to 193,459.20, 290,188.80 and 53,217.60

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Solution

The fourth proportional to 193,459.20, 290,188.80 and 53,217.60 is: 79,826.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,459.20 : 290,188.80 = 53,217.60 : x
  2. Step 2: Convert to fraction form
    193,459.20/290,188.80 = 53,217.60/x
  3. Step 3: Cross multiply
    193,459.20x = 290,188.80 × 53,217.60
  4. Step 4: Simplify right side
    193,459.20x = 15,443,151,482.88
  5. Step 5: Solve for x
    x = 15,443,151,482.88/193,459.20
  6. Step 6: Final answer
    x = 79,826.40

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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.