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Finding the Fourth Proportional to 117,692.51, 162,412.24 and 66,709.93

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Solution

The fourth proportional to 117,692.51, 162,412.24 and 66,709.93 is: 92,057.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,692.51 : 162,412.24 = 66,709.93 : x
  2. Step 2: Convert to fraction form
    117,692.51/162,412.24 = 66,709.93/x
  3. Step 3: Cross multiply
    117,692.51x = 162,412.24 × 66,709.93
  4. Step 4: Simplify right side
    117,692.51x = 10,834,509,018.34
  5. Step 5: Solve for x
    x = 10,834,509,018.34/117,692.51
  6. Step 6: Final answer
    x = 92,057.76

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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.