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Finding the Fourth Proportional to 716,957.33, 989,400.83 and 394,665.75

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Solution

The fourth proportional to 716,957.33, 989,400.83 and 394,665.75 is: 544,638.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,957.33 : 989,400.83 = 394,665.75 : x
  2. Step 2: Convert to fraction form
    716,957.33/989,400.83 = 394,665.75/x
  3. Step 3: Cross multiply
    716,957.33x = 989,400.83 × 394,665.75
  4. Step 4: Simplify right side
    716,957.33x = 390,482,618,649.24
  5. Step 5: Solve for x
    x = 390,482,618,649.24/716,957.33
  6. Step 6: Final answer
    x = 544,638.58

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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.