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Finding the Fourth Proportional to 173,387.94, 259,612.29 and 90,106.98

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Solution

The fourth proportional to 173,387.94, 259,612.29 and 90,106.98 is: 134,916.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,387.94 : 259,612.29 = 90,106.98 : x
  2. Step 2: Convert to fraction form
    173,387.94/259,612.29 = 90,106.98/x
  3. Step 3: Cross multiply
    173,387.94x = 259,612.29 × 90,106.98
  4. Step 4: Simplify right side
    173,387.94x = 23,392,879,422.78
  5. Step 5: Solve for x
    x = 23,392,879,422.78/173,387.94
  6. Step 6: Final answer
    x = 134,916.42

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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.