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Finding the Fourth Proportional to 677,464.87, 934,834.14 and 391,077.22

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Solution

The fourth proportional to 677,464.87, 934,834.14 and 391,077.22 is: 539,647.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,464.87 : 934,834.14 = 391,077.22 : x
  2. Step 2: Convert to fraction form
    677,464.87/934,834.14 = 391,077.22/x
  3. Step 3: Cross multiply
    677,464.87x = 934,834.14 × 391,077.22
  4. Step 4: Simplify right side
    677,464.87x = 365,592,331,958.12
  5. Step 5: Solve for x
    x = 365,592,331,958.12/677,464.87
  6. Step 6: Final answer
    x = 539,647.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.