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Finding the Fourth Proportional to 609,667.28, 910,792.64 and 394,683.76

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Solution

The fourth proportional to 609,667.28, 910,792.64 and 394,683.76 is: 589,624.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,667.28 : 910,792.64 = 394,683.76 : x
  2. Step 2: Convert to fraction form
    609,667.28/910,792.64 = 394,683.76/x
  3. Step 3: Cross multiply
    609,667.28x = 910,792.64 × 394,683.76
  4. Step 4: Simplify right side
    609,667.28x = 359,475,063,735.53
  5. Step 5: Solve for x
    x = 359,475,063,735.53/609,667.28
  6. Step 6: Final answer
    x = 589,624.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.