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Finding the Fourth Proportional to 125,692.40, 173,492.90 and 72,013.16

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Solution

The fourth proportional to 125,692.40, 173,492.90 and 72,013.16 is: 99,399.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,692.40 : 173,492.90 = 72,013.16 : x
  2. Step 2: Convert to fraction form
    125,692.40/173,492.90 = 72,013.16/x
  3. Step 3: Cross multiply
    125,692.40x = 173,492.90 × 72,013.16
  4. Step 4: Simplify right side
    125,692.40x = 12,493,770,739.03
  5. Step 5: Solve for x
    x = 12,493,770,739.03/125,692.40
  6. Step 6: Final answer
    x = 99,399.58

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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.