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Finding the Fourth Proportional to 93,220.20, 139,830.30 and 51,229.80

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Solution

The fourth proportional to 93,220.20, 139,830.30 and 51,229.80 is: 76,844.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,220.20 : 139,830.30 = 51,229.80 : x
  2. Step 2: Convert to fraction form
    93,220.20/139,830.30 = 51,229.80/x
  3. Step 3: Cross multiply
    93,220.20x = 139,830.30 × 51,229.80
  4. Step 4: Simplify right side
    93,220.20x = 7,163,478,302.94
  5. Step 5: Solve for x
    x = 7,163,478,302.94/93,220.20
  6. Step 6: Final answer
    x = 76,844.70

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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.