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Finding the Fourth Proportional to 79,692.84, 119,210.94 and 70,813.80

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Solution

The fourth proportional to 79,692.84, 119,210.94 and 70,813.80 is: 105,928.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,692.84 : 119,210.94 = 70,813.80 : x
  2. Step 2: Convert to fraction form
    79,692.84/119,210.94 = 70,813.80/x
  3. Step 3: Cross multiply
    79,692.84x = 119,210.94 × 70,813.80
  4. Step 4: Simplify right side
    79,692.84x = 8,441,779,662.97
  5. Step 5: Solve for x
    x = 8,441,779,662.97/79,692.84
  6. Step 6: Final answer
    x = 105,928.96

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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.