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Finding the Fourth Proportional to 8,915.69, 12,303.75 and 4,936.88

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Solution

The fourth proportional to 8,915.69, 12,303.75 and 4,936.88 is: 6,812.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.69 : 12,303.75 = 4,936.88 : x
  2. Step 2: Convert to fraction form
    8,915.69/12,303.75 = 4,936.88/x
  3. Step 3: Cross multiply
    8,915.69x = 12,303.75 × 4,936.88
  4. Step 4: Simplify right side
    8,915.69x = 60,742,075.78
  5. Step 5: Solve for x
    x = 60,742,075.78/8,915.69
  6. Step 6: Final answer
    x = 6,812.95

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.