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Finding the Fourth Proportional to 414,000.55, 621,000.83 and 402,336.55

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Solution

The fourth proportional to 414,000.55, 621,000.83 and 402,336.55 is: 603,504.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,000.55 : 621,000.83 = 402,336.55 : x
  2. Step 2: Convert to fraction form
    414,000.55/621,000.83 = 402,336.55/x
  3. Step 3: Cross multiply
    414,000.55x = 621,000.83 × 402,336.55
  4. Step 4: Simplify right side
    414,000.55x = 249,851,329,477.65
  5. Step 5: Solve for x
    x = 249,851,329,477.65/414,000.55
  6. Step 6: Final answer
    x = 603,504.83

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Similar ratio
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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.