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Finding the Fourth Proportional to 621,349.98, 932,015.51 and 279,551.98

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Solution

The fourth proportional to 621,349.98, 932,015.51 and 279,551.98 is: 419,323.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,349.98 : 932,015.51 = 279,551.98 : x
  2. Step 2: Convert to fraction form
    621,349.98/932,015.51 = 279,551.98/x
  3. Step 3: Cross multiply
    621,349.98x = 932,015.51 × 279,551.98
  4. Step 4: Simplify right side
    621,349.98x = 260,546,781,211.21
  5. Step 5: Solve for x
    x = 260,546,781,211.21/621,349.98
  6. Step 6: Final answer
    x = 419,323.71

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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.