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Finding the Fourth Proportional to 212,590.16, 318,136.26 and 132,665.72

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Solution

The fourth proportional to 212,590.16, 318,136.26 and 132,665.72 is: 198,531.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,590.16 : 318,136.26 = 132,665.72 : x
  2. Step 2: Convert to fraction form
    212,590.16/318,136.26 = 132,665.72/x
  3. Step 3: Cross multiply
    212,590.16x = 318,136.26 × 132,665.72
  4. Step 4: Simplify right side
    212,590.16x = 42,205,775,991.01
  5. Step 5: Solve for x
    x = 42,205,775,991.01/212,590.16
  6. Step 6: Final answer
    x = 198,531.18

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.