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Finding the Fourth Proportional to 713,396.67, 984,487.16 and 391,099.84

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Solution

The fourth proportional to 713,396.67, 984,487.16 and 391,099.84 is: 539,717.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,396.67 : 984,487.16 = 391,099.84 : x
  2. Step 2: Convert to fraction form
    713,396.67/984,487.16 = 391,099.84/x
  3. Step 3: Cross multiply
    713,396.67x = 984,487.16 × 391,099.84
  4. Step 4: Simplify right side
    713,396.67x = 385,032,774,812.33
  5. Step 5: Solve for x
    x = 385,032,774,812.33/713,396.67
  6. Step 6: Final answer
    x = 539,717.65

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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.