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Finding the Fourth Proportional to 638,550, 957,825.36 and 195,318

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Solution

The fourth proportional to 638,550, 957,825.36 and 195,318 is: 292,977.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,550 : 957,825.36 = 195,318 : x
  2. Step 2: Convert to fraction form
    638,550/957,825.36 = 195,318/x
  3. Step 3: Cross multiply
    638,550x = 957,825.36 × 195,318
  4. Step 4: Simplify right side
    638,550x = 187,080,533,664.48
  5. Step 5: Solve for x
    x = 187,080,533,664.48/638,550
  6. Step 6: Final answer
    x = 292,977.11

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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.