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Finding the Fourth Proportional to 414,145.40, 621,874.20 and 302,608.40

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Solution

The fourth proportional to 414,145.40, 621,874.20 and 302,608.40 is: 454,392.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,145.40 : 621,874.20 = 302,608.40 : x
  2. Step 2: Convert to fraction form
    414,145.40/621,874.20 = 302,608.40/x
  3. Step 3: Cross multiply
    414,145.40x = 621,874.20 × 302,608.40
  4. Step 4: Simplify right side
    414,145.40x = 188,184,356,663.28
  5. Step 5: Solve for x
    x = 188,184,356,663.28/414,145.40
  6. Step 6: Final answer
    x = 454,392.00

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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.