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Finding the Fourth Proportional to 10,405.22, 14,359.05 and 5,929.22

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Solution

The fourth proportional to 10,405.22, 14,359.05 and 5,929.22 is: 8,182.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,405.22 : 14,359.05 = 5,929.22 : x
  2. Step 2: Convert to fraction form
    10,405.22/14,359.05 = 5,929.22/x
  3. Step 3: Cross multiply
    10,405.22x = 14,359.05 × 5,929.22
  4. Step 4: Simplify right side
    10,405.22x = 85,137,966.44
  5. Step 5: Solve for x
    x = 85,137,966.44/10,405.22
  6. Step 6: Final answer
    x = 8,182.24

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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.