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Finding the Fourth Proportional to 638,448.75, 957,687.71 and 189,161.19

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Solution

The fourth proportional to 638,448.75, 957,687.71 and 189,161.19 is: 283,746.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,448.75 : 957,687.71 = 189,161.19 : x
  2. Step 2: Convert to fraction form
    638,448.75/957,687.71 = 189,161.19/x
  3. Step 3: Cross multiply
    638,448.75x = 957,687.71 × 189,161.19
  4. Step 4: Simplify right side
    638,448.75x = 181,157,345,926.17
  5. Step 5: Solve for x
    x = 181,157,345,926.17/638,448.75
  6. Step 6: Final answer
    x = 283,746.10

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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.