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Finding the Fourth Proportional to 14,878.98, 20,532.24 and 8,913.96

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Solution

The fourth proportional to 14,878.98, 20,532.24 and 8,913.96 is: 12,300.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,878.98 : 20,532.24 = 8,913.96 : x
  2. Step 2: Convert to fraction form
    14,878.98/20,532.24 = 8,913.96/x
  3. Step 3: Cross multiply
    14,878.98x = 20,532.24 × 8,913.96
  4. Step 4: Simplify right side
    14,878.98x = 183,023,566.07
  5. Step 5: Solve for x
    x = 183,023,566.07/14,878.98
  6. Step 6: Final answer
    x = 12,300.81

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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.