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Finding the Fourth Proportional to 53,136.68, 79,692.24 and 15,686.68

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Solution

The fourth proportional to 53,136.68, 79,692.24 and 15,686.68 is: 23,526.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,136.68 : 79,692.24 = 15,686.68 : x
  2. Step 2: Convert to fraction form
    53,136.68/79,692.24 = 15,686.68/x
  3. Step 3: Cross multiply
    53,136.68x = 79,692.24 × 15,686.68
  4. Step 4: Simplify right side
    53,136.68x = 1,250,106,667.36
  5. Step 5: Solve for x
    x = 1,250,106,667.36/53,136.68
  6. Step 6: Final answer
    x = 23,526.25

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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.