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Finding the Fourth Proportional to 171,875.94, 257,915.97 and 92,988.42

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Solution

The fourth proportional to 171,875.94, 257,915.97 and 92,988.42 is: 139,537.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,875.94 : 257,915.97 = 92,988.42 : x
  2. Step 2: Convert to fraction form
    171,875.94/257,915.97 = 92,988.42/x
  3. Step 3: Cross multiply
    171,875.94x = 257,915.97 × 92,988.42
  4. Step 4: Simplify right side
    171,875.94x = 23,983,198,543.07
  5. Step 5: Solve for x
    x = 23,983,198,543.07/171,875.94
  6. Step 6: Final answer
    x = 139,537.85

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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.