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Finding the Fourth Proportional to 14,405.10, 19,878.57 and 8,816.10

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Solution

The fourth proportional to 14,405.10, 19,878.57 and 8,816.10 is: 12,165.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,405.10 : 19,878.57 = 8,816.10 : x
  2. Step 2: Convert to fraction form
    14,405.10/19,878.57 = 8,816.10/x
  3. Step 3: Cross multiply
    14,405.10x = 19,878.57 × 8,816.10
  4. Step 4: Simplify right side
    14,405.10x = 175,251,460.98
  5. Step 5: Solve for x
    x = 175,251,460.98/14,405.10
  6. Step 6: Final answer
    x = 12,165.93

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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.