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Finding the Fourth Proportional to 381,701.20, 572,551.80 and 362,455.60

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Solution

The fourth proportional to 381,701.20, 572,551.80 and 362,455.60 is: 543,683.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,701.20 : 572,551.80 = 362,455.60 : x
  2. Step 2: Convert to fraction form
    381,701.20/572,551.80 = 362,455.60/x
  3. Step 3: Cross multiply
    381,701.20x = 572,551.80 × 362,455.60
  4. Step 4: Simplify right side
    381,701.20x = 207,524,606,200.08
  5. Step 5: Solve for x
    x = 207,524,606,200.08/381,701.20
  6. Step 6: Final answer
    x = 543,683.40

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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.