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Finding the Fourth Proportional to 77,383.81, 116,075.72 and 61,899.85

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Solution

The fourth proportional to 77,383.81, 116,075.72 and 61,899.85 is: 92,849.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,383.81 : 116,075.72 = 61,899.85 : x
  2. Step 2: Convert to fraction form
    77,383.81/116,075.72 = 61,899.85/x
  3. Step 3: Cross multiply
    77,383.81x = 116,075.72 × 61,899.85
  4. Step 4: Simplify right side
    77,383.81x = 7,185,069,656.64
  5. Step 5: Solve for x
    x = 7,185,069,656.64/77,383.81
  6. Step 6: Final answer
    x = 92,849.78

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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.