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Finding the Fourth Proportional to 839,640.12, 1,158,669 and 457,658.52

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Solution

The fourth proportional to 839,640.12, 1,158,669 and 457,658.52 is: 631,550.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,640.12 : 1,158,669 = 457,658.52 : x
  2. Step 2: Convert to fraction form
    839,640.12/1,158,669 = 457,658.52/x
  3. Step 3: Cross multiply
    839,640.12x = 1,158,669 × 457,658.52
  4. Step 4: Simplify right side
    839,640.12x = 530,274,739,709.88
  5. Step 5: Solve for x
    x = 530,274,739,709.88/839,640.12
  6. Step 6: Final answer
    x = 631,550.03

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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.