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Finding the Fourth Proportional to 123,916.84, 171,257.29 and 93,692.50

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Solution

The fourth proportional to 123,916.84, 171,257.29 and 93,692.50 is: 129,486.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,916.84 : 171,257.29 = 93,692.50 : x
  2. Step 2: Convert to fraction form
    123,916.84/171,257.29 = 93,692.50/x
  3. Step 3: Cross multiply
    123,916.84x = 171,257.29 × 93,692.50
  4. Step 4: Simplify right side
    123,916.84x = 16,045,522,980.95
  5. Step 5: Solve for x
    x = 16,045,522,980.95/123,916.84
  6. Step 6: Final answer
    x = 129,486.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.