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Finding the Fourth Proportional to 105,374.40, 158,061.60 and 26,491.20

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Solution

The fourth proportional to 105,374.40, 158,061.60 and 26,491.20 is: 39,736.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,374.40 : 158,061.60 = 26,491.20 : x
  2. Step 2: Convert to fraction form
    105,374.40/158,061.60 = 26,491.20/x
  3. Step 3: Cross multiply
    105,374.40x = 158,061.60 × 26,491.20
  4. Step 4: Simplify right side
    105,374.40x = 4,187,241,457.92
  5. Step 5: Solve for x
    x = 4,187,241,457.92/105,374.40
  6. Step 6: Final answer
    x = 39,736.80

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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.