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Finding the Fourth Proportional to 399,993.60, 599,996.80 and 104,505.60

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Solution

The fourth proportional to 399,993.60, 599,996.80 and 104,505.60 is: 156,760.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,993.60 : 599,996.80 = 104,505.60 : x
  2. Step 2: Convert to fraction form
    399,993.60/599,996.80 = 104,505.60/x
  3. Step 3: Cross multiply
    399,993.60x = 599,996.80 × 104,505.60
  4. Step 4: Simplify right side
    399,993.60x = 62,703,025,582.08
  5. Step 5: Solve for x
    x = 62,703,025,582.08/399,993.60
  6. Step 6: Final answer
    x = 156,760.07

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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.