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Finding the Fourth Proportional to 146,762.60, 220,143.90 and 76,625.60

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Solution

The fourth proportional to 146,762.60, 220,143.90 and 76,625.60 is: 114,938.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,762.60 : 220,143.90 = 76,625.60 : x
  2. Step 2: Convert to fraction form
    146,762.60/220,143.90 = 76,625.60/x
  3. Step 3: Cross multiply
    146,762.60x = 220,143.90 × 76,625.60
  4. Step 4: Simplify right side
    146,762.60x = 16,868,658,423.84
  5. Step 5: Solve for x
    x = 16,868,658,423.84/146,762.60
  6. Step 6: Final answer
    x = 114,938.40

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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.