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Finding the Fourth Proportional to 716,953.33, 989,395.31 and 394,661.75

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Solution

The fourth proportional to 716,953.33, 989,395.31 and 394,661.75 is: 544,633.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,953.33 : 989,395.31 = 394,661.75 : x
  2. Step 2: Convert to fraction form
    716,953.33/989,395.31 = 394,661.75/x
  3. Step 3: Cross multiply
    716,953.33x = 989,395.31 × 394,661.75
  4. Step 4: Simplify right side
    716,953.33x = 390,476,482,513.08
  5. Step 5: Solve for x
    x = 390,476,482,513.08/716,953.33
  6. Step 6: Final answer
    x = 544,633.06

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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.