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Finding the Fourth Proportional to 603,736.80, 905,605.20 and 558,117.60

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Solution

The fourth proportional to 603,736.80, 905,605.20 and 558,117.60 is: 837,176.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,736.80 : 905,605.20 = 558,117.60 : x
  2. Step 2: Convert to fraction form
    603,736.80/905,605.20 = 558,117.60/x
  3. Step 3: Cross multiply
    603,736.80x = 905,605.20 × 558,117.60
  4. Step 4: Simplify right side
    603,736.80x = 505,434,200,771.52
  5. Step 5: Solve for x
    x = 505,434,200,771.52/603,736.80
  6. Step 6: Final answer
    x = 837,176.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.