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Finding the Fourth Proportional to 14,576.90, 21,876.15 and 10,688.90

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Solution

The fourth proportional to 14,576.90, 21,876.15 and 10,688.90 is: 16,041.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,576.90 : 21,876.15 = 10,688.90 : x
  2. Step 2: Convert to fraction form
    14,576.90/21,876.15 = 10,688.90/x
  3. Step 3: Cross multiply
    14,576.90x = 21,876.15 × 10,688.90
  4. Step 4: Simplify right side
    14,576.90x = 233,831,979.74
  5. Step 5: Solve for x
    x = 233,831,979.74/14,576.90
  6. Step 6: Final answer
    x = 16,041.27

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1.5x scale

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.