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Finding the Fourth Proportional to 9,915.44, 14,875.88 and 8,061.96

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Solution

The fourth proportional to 9,915.44, 14,875.88 and 8,061.96 is: 12,095.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915.44 : 14,875.88 = 8,061.96 : x
  2. Step 2: Convert to fraction form
    9,915.44/14,875.88 = 8,061.96/x
  3. Step 3: Cross multiply
    9,915.44x = 14,875.88 × 8,061.96
  4. Step 4: Simplify right side
    9,915.44x = 119,928,749.52
  5. Step 5: Solve for x
    x = 119,928,749.52/9,915.44
  6. Step 6: Final answer
    x = 12,095.15

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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.