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Finding the Fourth Proportional to 621,353.48, 932,020.74 and 279,555.48

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Solution

The fourth proportional to 621,353.48, 932,020.74 and 279,555.48 is: 419,328.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,353.48 : 932,020.74 = 279,555.48 : x
  2. Step 2: Convert to fraction form
    621,353.48/932,020.74 = 279,555.48/x
  3. Step 3: Cross multiply
    621,353.48x = 932,020.74 × 279,555.48
  4. Step 4: Simplify right side
    621,353.48x = 260,551,505,340.66
  5. Step 5: Solve for x
    x = 260,551,505,340.66/621,353.48
  6. Step 6: Final answer
    x = 419,328.96

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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.