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Finding the Fourth Proportional to 61,716.56, 92,450.88 and 28,390.28

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Solution

The fourth proportional to 61,716.56, 92,450.88 and 28,390.28 is: 42,528.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,716.56 : 92,450.88 = 28,390.28 : x
  2. Step 2: Convert to fraction form
    61,716.56/92,450.88 = 28,390.28/x
  3. Step 3: Cross multiply
    61,716.56x = 92,450.88 × 28,390.28
  4. Step 4: Simplify right side
    61,716.56x = 2,624,706,369.45
  5. Step 5: Solve for x
    x = 2,624,706,369.45/61,716.56
  6. Step 6: Final answer
    x = 42,528.40

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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.