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Finding the Fourth Proportional to 103,621, 155,457.60 and 29,749

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Solution

The fourth proportional to 103,621, 155,457.60 and 29,749 is: 44,630.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,621 : 155,457.60 = 29,749 : x
  2. Step 2: Convert to fraction form
    103,621/155,457.60 = 29,749/x
  3. Step 3: Cross multiply
    103,621x = 155,457.60 × 29,749
  4. Step 4: Simplify right side
    103,621x = 4,624,708,142.40
  5. Step 5: Solve for x
    x = 4,624,708,142.40/103,621
  6. Step 6: Final answer
    x = 44,630.99

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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.