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Finding the Fourth Proportional to 716,210.88, 988,399.20 and 393,950.97

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Solution

The fourth proportional to 716,210.88, 988,399.20 and 393,950.97 is: 543,667.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,210.88 : 988,399.20 = 393,950.97 : x
  2. Step 2: Convert to fraction form
    716,210.88/988,399.20 = 393,950.97/x
  3. Step 3: Cross multiply
    716,210.88x = 988,399.20 × 393,950.97
  4. Step 4: Simplify right side
    716,210.88x = 389,380,823,587.22
  5. Step 5: Solve for x
    x = 389,380,823,587.22/716,210.88
  6. Step 6: Final answer
    x = 543,667.84

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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.