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Finding the Fourth Proportional to 499,609.90, 749,414.85 and 411,036.40

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Solution

The fourth proportional to 499,609.90, 749,414.85 and 411,036.40 is: 616,554.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,609.90 : 749,414.85 = 411,036.40 : x
  2. Step 2: Convert to fraction form
    499,609.90/749,414.85 = 411,036.40/x
  3. Step 3: Cross multiply
    499,609.90x = 749,414.85 × 411,036.40
  4. Step 4: Simplify right side
    499,609.90x = 308,036,782,050.54
  5. Step 5: Solve for x
    x = 308,036,782,050.54/499,609.90
  6. Step 6: Final answer
    x = 616,554.60

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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.