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Finding the Fourth Proportional to 68,242.56, 102,352.56 and 48,461.28

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Solution

The fourth proportional to 68,242.56, 102,352.56 and 48,461.28 is: 72,683.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,242.56 : 102,352.56 = 48,461.28 : x
  2. Step 2: Convert to fraction form
    68,242.56/102,352.56 = 48,461.28/x
  3. Step 3: Cross multiply
    68,242.56x = 102,352.56 × 48,461.28
  4. Step 4: Simplify right side
    68,242.56x = 4,960,136,068.88
  5. Step 5: Solve for x
    x = 4,960,136,068.88/68,242.56
  6. Step 6: Final answer
    x = 72,683.91

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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.