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Finding the Fourth Proportional to 638,714.64, 957,282.98 and 548,120.54

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Solution

The fourth proportional to 638,714.64, 957,282.98 and 548,120.54 is: 821,503.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,714.64 : 957,282.98 = 548,120.54 : x
  2. Step 2: Convert to fraction form
    638,714.64/957,282.98 = 548,120.54/x
  3. Step 3: Cross multiply
    638,714.64x = 957,282.98 × 548,120.54
  4. Step 4: Simplify right side
    638,714.64x = 524,706,463,930.41
  5. Step 5: Solve for x
    x = 524,706,463,930.41/638,714.64
  6. Step 6: Final answer
    x = 821,503.74

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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.