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Finding the Fourth Proportional to 274,012.40, 411,061.80 and 87,042.80

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Solution

The fourth proportional to 274,012.40, 411,061.80 and 87,042.80 is: 130,577.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,012.40 : 411,061.80 = 87,042.80 : x
  2. Step 2: Convert to fraction form
    274,012.40/411,061.80 = 87,042.80/x
  3. Step 3: Cross multiply
    274,012.40x = 411,061.80 × 87,042.80
  4. Step 4: Simplify right side
    274,012.40x = 35,779,970,045.04
  5. Step 5: Solve for x
    x = 35,779,970,045.04/274,012.40
  6. Step 6: Final answer
    x = 130,577.92

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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.