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Finding the Fourth Proportional to 518,998.97, 716,216.27 and 280,534.97

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Solution

The fourth proportional to 518,998.97, 716,216.27 and 280,534.97 is: 387,137.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,998.97 : 716,216.27 = 280,534.97 : x
  2. Step 2: Convert to fraction form
    518,998.97/716,216.27 = 280,534.97/x
  3. Step 3: Cross multiply
    518,998.97x = 716,216.27 × 280,534.97
  4. Step 4: Simplify right side
    518,998.97x = 200,923,706,938.22
  5. Step 5: Solve for x
    x = 200,923,706,938.22/518,998.97
  6. Step 6: Final answer
    x = 387,137.01

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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.