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Finding the Fourth Proportional to 613,441.59, 920,350.19 and 314,134.10

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Solution

The fourth proportional to 613,441.59, 920,350.19 and 314,134.10 is: 471,297.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,441.59 : 920,350.19 = 314,134.10 : x
  2. Step 2: Convert to fraction form
    613,441.59/920,350.19 = 314,134.10/x
  3. Step 3: Cross multiply
    613,441.59x = 920,350.19 × 314,134.10
  4. Step 4: Simplify right side
    613,441.59x = 289,113,378,620.48
  5. Step 5: Solve for x
    x = 289,113,378,620.48/613,441.59
  6. Step 6: Final answer
    x = 471,297.32

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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.