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Finding the Fourth Proportional to 66,716.87, 92,073.92 and 42,851.03

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Solution

The fourth proportional to 66,716.87, 92,073.92 and 42,851.03 is: 59,137.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,716.87 : 92,073.92 = 42,851.03 : x
  2. Step 2: Convert to fraction form
    66,716.87/92,073.92 = 42,851.03/x
  3. Step 3: Cross multiply
    66,716.87x = 92,073.92 × 42,851.03
  4. Step 4: Simplify right side
    66,716.87x = 3,945,461,633.51
  5. Step 5: Solve for x
    x = 3,945,461,633.51/66,716.87
  6. Step 6: Final answer
    x = 59,137.40

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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.