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Finding the Fourth Proportional to 94,692.76, 130,688.47 and 65,993.85

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Solution

The fourth proportional to 94,692.76, 130,688.47 and 65,993.85 is: 91,080.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,692.76 : 130,688.47 = 65,993.85 : x
  2. Step 2: Convert to fraction form
    94,692.76/130,688.47 = 65,993.85/x
  3. Step 3: Cross multiply
    94,692.76x = 130,688.47 × 65,993.85
  4. Step 4: Simplify right side
    94,692.76x = 8,624,635,368.40
  5. Step 5: Solve for x
    x = 8,624,635,368.40/94,692.76
  6. Step 6: Final answer
    x = 91,080.20

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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.