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Finding the Fourth Proportional to 414,986.80, 621,097.80 and 365,220.40

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Solution

The fourth proportional to 414,986.80, 621,097.80 and 365,220.40 is: 546,613.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,986.80 : 621,097.80 = 365,220.40 : x
  2. Step 2: Convert to fraction form
    414,986.80/621,097.80 = 365,220.40/x
  3. Step 3: Cross multiply
    414,986.80x = 621,097.80 × 365,220.40
  4. Step 4: Simplify right side
    414,986.80x = 226,837,586,955.12
  5. Step 5: Solve for x
    x = 226,837,586,955.12/414,986.80
  6. Step 6: Final answer
    x = 546,613.98

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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.