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Finding the Fourth Proportional to 66,692.75, 99,928.06 and 46,929.78

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Solution

The fourth proportional to 66,692.75, 99,928.06 and 46,929.78 is: 70,316.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,692.75 : 99,928.06 = 46,929.78 : x
  2. Step 2: Convert to fraction form
    66,692.75/99,928.06 = 46,929.78/x
  3. Step 3: Cross multiply
    66,692.75x = 99,928.06 × 46,929.78
  4. Step 4: Simplify right side
    66,692.75x = 4,689,601,754.30
  5. Step 5: Solve for x
    x = 4,689,601,754.30/66,692.75
  6. Step 6: Final answer
    x = 70,316.52

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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.