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Finding the Fourth Proportional to 29,491.92, 40,698.48 and 16,916.40

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Solution

The fourth proportional to 29,491.92, 40,698.48 and 16,916.40 is: 23,344.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,491.92 : 40,698.48 = 16,916.40 : x
  2. Step 2: Convert to fraction form
    29,491.92/40,698.48 = 16,916.40/x
  3. Step 3: Cross multiply
    29,491.92x = 40,698.48 × 16,916.40
  4. Step 4: Simplify right side
    29,491.92x = 688,471,767.07
  5. Step 5: Solve for x
    x = 688,471,767.07/29,491.92
  6. Step 6: Final answer
    x = 23,344.42

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1.5x scale

Why These Related Problems?

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