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Finding the Fourth Proportional to 173,421.20, 260,131.80 and 48,762.20

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Solution

The fourth proportional to 173,421.20, 260,131.80 and 48,762.20 is: 73,143.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,421.20 : 260,131.80 = 48,762.20 : x
  2. Step 2: Convert to fraction form
    173,421.20/260,131.80 = 48,762.20/x
  3. Step 3: Cross multiply
    173,421.20x = 260,131.80 × 48,762.20
  4. Step 4: Simplify right side
    173,421.20x = 12,684,597,557.30
  5. Step 5: Solve for x
    x = 12,684,597,557.30/173,421.20
  6. Step 6: Final answer
    x = 73,143.29

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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.