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Finding the Fourth Proportional to 173,407.90, 260,111.85 and 55,091.20

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Solution

The fourth proportional to 173,407.90, 260,111.85 and 55,091.20 is: 82,636.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,407.90 : 260,111.85 = 55,091.20 : x
  2. Step 2: Convert to fraction form
    173,407.90/260,111.85 = 55,091.20/x
  3. Step 3: Cross multiply
    173,407.90x = 260,111.85 × 55,091.20
  4. Step 4: Simplify right side
    173,407.90x = 14,329,873,950.72
  5. Step 5: Solve for x
    x = 14,329,873,950.72/173,407.90
  6. Step 6: Final answer
    x = 82,636.80

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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.