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Finding the Fourth Proportional to 713,634.84, 984,817.38 and 391,347.25

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Solution

The fourth proportional to 713,634.84, 984,817.38 and 391,347.25 is: 540,059.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,634.84 : 984,817.38 = 391,347.25 : x
  2. Step 2: Convert to fraction form
    713,634.84/984,817.38 = 391,347.25/x
  3. Step 3: Cross multiply
    713,634.84x = 984,817.38 × 391,347.25
  4. Step 4: Simplify right side
    713,634.84x = 385,405,569,669.05
  5. Step 5: Solve for x
    x = 385,405,569,669.05/713,634.84
  6. Step 6: Final answer
    x = 540,059.91

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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.