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Finding the Fourth Proportional to 8,915.70, 12,303.58 and 4,936.98

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Solution

The fourth proportional to 8,915.70, 12,303.58 and 4,936.98 is: 6,812.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.70 : 12,303.58 = 4,936.98 : x
  2. Step 2: Convert to fraction form
    8,915.70/12,303.58 = 4,936.98/x
  3. Step 3: Cross multiply
    8,915.70x = 12,303.58 × 4,936.98
  4. Step 4: Simplify right side
    8,915.70x = 60,742,528.39
  5. Step 5: Solve for x
    x = 60,742,528.39/8,915.70
  6. Step 6: Final answer
    x = 6,812.98

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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.