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Finding the Fourth Proportional to 103,692.76, 155,538.12 and 47,516.94

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Solution

The fourth proportional to 103,692.76, 155,538.12 and 47,516.94 is: 71,274.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,692.76 : 155,538.12 = 47,516.94 : x
  2. Step 2: Convert to fraction form
    103,692.76/155,538.12 = 47,516.94/x
  3. Step 3: Cross multiply
    103,692.76x = 155,538.12 × 47,516.94
  4. Step 4: Simplify right side
    103,692.76x = 7,390,695,515.75
  5. Step 5: Solve for x
    x = 7,390,695,515.75/103,692.76
  6. Step 6: Final answer
    x = 71,274.94

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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.