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Finding the Fourth Proportional to 608,616.16, 839,607.30 and 393,825.64

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Solution

The fourth proportional to 608,616.16, 839,607.30 and 393,825.64 is: 543,296.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,616.16 : 839,607.30 = 393,825.64 : x
  2. Step 2: Convert to fraction form
    608,616.16/839,607.30 = 393,825.64/x
  3. Step 3: Cross multiply
    608,616.16x = 839,607.30 × 393,825.64
  4. Step 4: Simplify right side
    608,616.16x = 330,658,882,271.17
  5. Step 5: Solve for x
    x = 330,658,882,271.17/608,616.16
  6. Step 6: Final answer
    x = 543,296.26

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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.