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Finding the Fourth Proportional to 29,641.88, 40,905.50 and 16,213.40

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Solution

The fourth proportional to 29,641.88, 40,905.50 and 16,213.40 is: 22,374.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,641.88 : 40,905.50 = 16,213.40 : x
  2. Step 2: Convert to fraction form
    29,641.88/40,905.50 = 16,213.40/x
  3. Step 3: Cross multiply
    29,641.88x = 40,905.50 × 16,213.40
  4. Step 4: Simplify right side
    29,641.88x = 663,216,948.11
  5. Step 5: Solve for x
    x = 663,216,948.11/29,641.88
  6. Step 6: Final answer
    x = 22,374.32

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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.