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Finding the Fourth Proportional to 513,779.56, 771,136.74 and 274,096.64

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Solution

The fourth proportional to 513,779.56, 771,136.74 and 274,096.64 is: 411,394.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,779.56 : 771,136.74 = 274,096.64 : x
  2. Step 2: Convert to fraction form
    513,779.56/771,136.74 = 274,096.64/x
  3. Step 3: Cross multiply
    513,779.56x = 771,136.74 × 274,096.64
  4. Step 4: Simplify right side
    513,779.56x = 211,365,991,342.40
  5. Step 5: Solve for x
    x = 211,365,991,342.40/513,779.56
  6. Step 6: Final answer
    x = 411,394.32

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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.