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Finding the Fourth Proportional to 414,961.80, 621,567.90 and 414,961.80

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Solution

The fourth proportional to 414,961.80, 621,567.90 and 414,961.80 is: 621,567.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,961.80 : 621,567.90 = 414,961.80 : x
  2. Step 2: Convert to fraction form
    414,961.80/621,567.90 = 414,961.80/x
  3. Step 3: Cross multiply
    414,961.80x = 621,567.90 × 414,961.80
  4. Step 4: Simplify right side
    414,961.80x = 257,926,934,606.22
  5. Step 5: Solve for x
    x = 257,926,934,606.22/414,961.80
  6. Step 6: Final answer
    x = 621,567.90

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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.