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Finding the Fourth Proportional to 613,184.99, 919,900.50 and 213,718.50

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Solution

The fourth proportional to 613,184.99, 919,900.50 and 213,718.50 is: 320,620.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,184.99 : 919,900.50 = 213,718.50 : x
  2. Step 2: Convert to fraction form
    613,184.99/919,900.50 = 213,718.50/x
  3. Step 3: Cross multiply
    613,184.99x = 919,900.50 × 213,718.50
  4. Step 4: Simplify right side
    613,184.99x = 196,599,754,207.81
  5. Step 5: Solve for x
    x = 196,599,754,207.81/613,184.99
  6. Step 6: Final answer
    x = 320,620.63

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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.