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Finding the Fourth Proportional to 414,947.10, 620,987.05 and 248,854.30

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Solution

The fourth proportional to 414,947.10, 620,987.05 and 248,854.30 is: 372,421.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,947.10 : 620,987.05 = 248,854.30 : x
  2. Step 2: Convert to fraction form
    414,947.10/620,987.05 = 248,854.30/x
  3. Step 3: Cross multiply
    414,947.10x = 620,987.05 × 248,854.30
  4. Step 4: Simplify right side
    414,947.10x = 154,535,297,636.82
  5. Step 5: Solve for x
    x = 154,535,297,636.82/414,947.10
  6. Step 6: Final answer
    x = 372,421.68

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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.