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Finding the Fourth Proportional to 623,893.68, 936,255.60 and 339,655.92

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Solution

The fourth proportional to 623,893.68, 936,255.60 and 339,655.92 is: 509,709.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,893.68 : 936,255.60 = 339,655.92 : x
  2. Step 2: Convert to fraction form
    623,893.68/936,255.60 = 339,655.92/x
  3. Step 3: Cross multiply
    623,893.68x = 936,255.60 × 339,655.92
  4. Step 4: Simplify right side
    623,893.68x = 318,004,757,173.15
  5. Step 5: Solve for x
    x = 318,004,757,173.15/623,893.68
  6. Step 6: Final answer
    x = 509,709.86

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1.5x scale

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.