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Finding the Fourth Proportional to 29,485.64, 40,689.90 and 16,056.86

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Solution

The fourth proportional to 29,485.64, 40,689.90 and 16,056.86 is: 22,158.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,485.64 : 40,689.90 = 16,056.86 : x
  2. Step 2: Convert to fraction form
    29,485.64/40,689.90 = 16,056.86/x
  3. Step 3: Cross multiply
    29,485.64x = 40,689.90 × 16,056.86
  4. Step 4: Simplify right side
    29,485.64x = 653,352,027.71
  5. Step 5: Solve for x
    x = 653,352,027.71/29,485.64
  6. Step 6: Final answer
    x = 22,158.31

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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.