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Finding the Fourth Proportional to 14,862.60, 20,509.56 and 8,488.80

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Solution

The fourth proportional to 14,862.60, 20,509.56 and 8,488.80 is: 11,714.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,862.60 : 20,509.56 = 8,488.80 : x
  2. Step 2: Convert to fraction form
    14,862.60/20,509.56 = 8,488.80/x
  3. Step 3: Cross multiply
    14,862.60x = 20,509.56 × 8,488.80
  4. Step 4: Simplify right side
    14,862.60x = 174,101,552.93
  5. Step 5: Solve for x
    x = 174,101,552.93/14,862.60
  6. Step 6: Final answer
    x = 11,714.07

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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.