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Finding the Fourth Proportional to 713,555.27, 984,705.56 and 391,270.75

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Solution

The fourth proportional to 713,555.27, 984,705.56 and 391,270.75 is: 539,953.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,555.27 : 984,705.56 = 391,270.75 : x
  2. Step 2: Convert to fraction form
    713,555.27/984,705.56 = 391,270.75/x
  3. Step 3: Cross multiply
    713,555.27x = 984,705.56 × 391,270.75
  4. Step 4: Simplify right side
    713,555.27x = 385,286,485,578.49
  5. Step 5: Solve for x
    x = 385,286,485,578.49/713,555.27
  6. Step 6: Final answer
    x = 539,953.24

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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.