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Finding the Fourth Proportional to 713,532.56, 984,663.48 and 391,245.36

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Solution

The fourth proportional to 713,532.56, 984,663.48 and 391,245.36 is: 539,912.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,532.56 : 984,663.48 = 391,245.36 : x
  2. Step 2: Convert to fraction form
    713,532.56/984,663.48 = 391,245.36/x
  3. Step 3: Cross multiply
    713,532.56x = 984,663.48 × 391,245.36
  4. Step 4: Simplify right side
    713,532.56x = 385,245,017,711.45
  5. Step 5: Solve for x
    x = 385,245,017,711.45/713,532.56
  6. Step 6: Final answer
    x = 539,912.32

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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.