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Finding the Fourth Proportional to 66,529.95, 91,811.31 and 45,346.21

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Solution

The fourth proportional to 66,529.95, 91,811.31 and 45,346.21 is: 62,577.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,529.95 : 91,811.31 = 45,346.21 : x
  2. Step 2: Convert to fraction form
    66,529.95/91,811.31 = 45,346.21/x
  3. Step 3: Cross multiply
    66,529.95x = 91,811.31 × 45,346.21
  4. Step 4: Simplify right side
    66,529.95x = 4,163,294,943.64
  5. Step 5: Solve for x
    x = 4,163,294,943.64/66,529.95
  6. Step 6: Final answer
    x = 62,577.76

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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.