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Finding the Fourth Proportional to 493,627.59, 740,469.08 and 138,613.93

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Solution

The fourth proportional to 493,627.59, 740,469.08 and 138,613.93 is: 207,928.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,627.59 : 740,469.08 = 138,613.93 : x
  2. Step 2: Convert to fraction form
    493,627.59/740,469.08 = 138,613.93/x
  3. Step 3: Cross multiply
    493,627.59x = 740,469.08 × 138,613.93
  4. Step 4: Simplify right side
    493,627.59x = 102,639,325,173.40
  5. Step 5: Solve for x
    x = 102,639,325,173.40/493,627.59
  6. Step 6: Final answer
    x = 207,928.67

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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.