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Finding the Fourth Proportional to 530,519.40, 795,779.10 and 214,986.60

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Solution

The fourth proportional to 530,519.40, 795,779.10 and 214,986.60 is: 322,479.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,519.40 : 795,779.10 = 214,986.60 : x
  2. Step 2: Convert to fraction form
    530,519.40/795,779.10 = 214,986.60/x
  3. Step 3: Cross multiply
    530,519.40x = 795,779.10 × 214,986.60
  4. Step 4: Simplify right side
    530,519.40x = 171,081,843,060.06
  5. Step 5: Solve for x
    x = 171,081,843,060.06/530,519.40
  6. Step 6: Final answer
    x = 322,479.90

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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.