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Finding the Fourth Proportional to 617,791.21, 927,341.89 and 547,172.30

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Solution

The fourth proportional to 617,791.21, 927,341.89 and 547,172.30 is: 821,338.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,791.21 : 927,341.89 = 547,172.30 : x
  2. Step 2: Convert to fraction form
    617,791.21/927,341.89 = 547,172.30/x
  3. Step 3: Cross multiply
    617,791.21x = 927,341.89 × 547,172.30
  4. Step 4: Simplify right side
    617,791.21x = 507,415,792,110.70
  5. Step 5: Solve for x
    x = 507,415,792,110.70/617,791.21
  6. Step 6: Final answer
    x = 821,338.64

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1.5x scale

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.