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Finding the Fourth Proportional to 47,128.50, 70,692.75 and 14,296.50

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Solution

The fourth proportional to 47,128.50, 70,692.75 and 14,296.50 is: 21,444.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,128.50 : 70,692.75 = 14,296.50 : x
  2. Step 2: Convert to fraction form
    47,128.50/70,692.75 = 14,296.50/x
  3. Step 3: Cross multiply
    47,128.50x = 70,692.75 × 14,296.50
  4. Step 4: Simplify right side
    47,128.50x = 1,010,658,900.38
  5. Step 5: Solve for x
    x = 1,010,658,900.38/47,128.50
  6. Step 6: Final answer
    x = 21,444.75

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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.