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Finding the Fourth Proportional to 173,376, 260,139.12 and 61,136.39

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Solution

The fourth proportional to 173,376, 260,139.12 and 61,136.39 is: 91,731.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,376 : 260,139.12 = 61,136.39 : x
  2. Step 2: Convert to fraction form
    173,376/260,139.12 = 61,136.39/x
  3. Step 3: Cross multiply
    173,376x = 260,139.12 × 61,136.39
  4. Step 4: Simplify right side
    173,376x = 15,903,965,393.88
  5. Step 5: Solve for x
    x = 15,903,965,393.88/173,376
  6. Step 6: Final answer
    x = 91,731.07

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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.