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Finding the Fourth Proportional to 14,854.40, 20,498.40 and 8,566.40

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Solution

The fourth proportional to 14,854.40, 20,498.40 and 8,566.40 is: 11,821.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,854.40 : 20,498.40 = 8,566.40 : x
  2. Step 2: Convert to fraction form
    14,854.40/20,498.40 = 8,566.40/x
  3. Step 3: Cross multiply
    14,854.40x = 20,498.40 × 8,566.40
  4. Step 4: Simplify right side
    14,854.40x = 175,597,493.76
  5. Step 5: Solve for x
    x = 175,597,493.76/14,854.40
  6. Step 6: Final answer
    x = 11,821.24

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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.