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Finding the Fourth Proportional to 407,698.20, 562,642.20 and 226,410.94

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Solution

The fourth proportional to 407,698.20, 562,642.20 and 226,410.94 is: 312,457.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,698.20 : 562,642.20 = 226,410.94 : x
  2. Step 2: Convert to fraction form
    407,698.20/562,642.20 = 226,410.94/x
  3. Step 3: Cross multiply
    407,698.20x = 562,642.20 × 226,410.94
  4. Step 4: Simplify right side
    407,698.20x = 127,388,348,506.54
  5. Step 5: Solve for x
    x = 127,388,348,506.54/407,698.20
  6. Step 6: Final answer
    x = 312,457.47

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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.