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Finding the Fourth Proportional to 638,407.44, 957,609 and 189,131.76

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Solution

The fourth proportional to 638,407.44, 957,609 and 189,131.76 is: 283,697.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,407.44 : 957,609 = 189,131.76 : x
  2. Step 2: Convert to fraction form
    638,407.44/957,609 = 189,131.76/x
  3. Step 3: Cross multiply
    638,407.44x = 957,609 × 189,131.76
  4. Step 4: Simplify right side
    638,407.44x = 181,114,275,561.84
  5. Step 5: Solve for x
    x = 181,114,275,561.84/638,407.44
  6. Step 6: Final answer
    x = 283,697.00

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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.