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Finding the Fourth Proportional to 451,993.12, 623,705.09 and 270,700.40

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Solution

The fourth proportional to 451,993.12, 623,705.09 and 270,700.40 is: 373,539.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,993.12 : 623,705.09 = 270,700.40 : x
  2. Step 2: Convert to fraction form
    451,993.12/623,705.09 = 270,700.40/x
  3. Step 3: Cross multiply
    451,993.12x = 623,705.09 × 270,700.40
  4. Step 4: Simplify right side
    451,993.12x = 168,837,217,550.80
  5. Step 5: Solve for x
    x = 168,837,217,550.80/451,993.12
  6. Step 6: Final answer
    x = 373,539.35

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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.