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Finding the Fourth Proportional to 699,052.56, 964,680.84 and 388,943.12

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Solution

The fourth proportional to 699,052.56, 964,680.84 and 388,943.12 is: 536,735.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,052.56 : 964,680.84 = 388,943.12 : x
  2. Step 2: Convert to fraction form
    699,052.56/964,680.84 = 388,943.12/x
  3. Step 3: Cross multiply
    699,052.56x = 964,680.84 × 388,943.12
  4. Step 4: Simplify right side
    699,052.56x = 375,205,975,713.82
  5. Step 5: Solve for x
    x = 375,205,975,713.82/699,052.56
  6. Step 6: Final answer
    x = 536,735.00

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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.