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Finding the Fourth Proportional to 173,438.20, 260,157.30 and 48,779.20

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Solution

The fourth proportional to 173,438.20, 260,157.30 and 48,779.20 is: 73,168.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,438.20 : 260,157.30 = 48,779.20 : x
  2. Step 2: Convert to fraction form
    173,438.20/260,157.30 = 48,779.20/x
  3. Step 3: Cross multiply
    173,438.20x = 260,157.30 × 48,779.20
  4. Step 4: Simplify right side
    173,438.20x = 12,690,264,968.16
  5. Step 5: Solve for x
    x = 12,690,264,968.16/173,438.20
  6. Step 6: Final answer
    x = 73,168.80

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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.