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Finding the Fourth Proportional to 608,643.35, 839,776.92 and 393,524.57

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Solution

The fourth proportional to 608,643.35, 839,776.92 and 393,524.57 is: 542,966.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,643.35 : 839,776.92 = 393,524.57 : x
  2. Step 2: Convert to fraction form
    608,643.35/839,776.92 = 393,524.57/x
  3. Step 3: Cross multiply
    608,643.35x = 839,776.92 × 393,524.57
  4. Step 4: Simplify right side
    608,643.35x = 330,472,847,140.04
  5. Step 5: Solve for x
    x = 330,472,847,140.04/608,643.35
  6. Step 6: Final answer
    x = 542,966.33

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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.