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Finding the Fourth Proportional to 14,792.88, 20,404.80 and 11,248.32

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Solution

The fourth proportional to 14,792.88, 20,404.80 and 11,248.32 is: 15,515.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,792.88 : 20,404.80 = 11,248.32 : x
  2. Step 2: Convert to fraction form
    14,792.88/20,404.80 = 11,248.32/x
  3. Step 3: Cross multiply
    14,792.88x = 20,404.80 × 11,248.32
  4. Step 4: Simplify right side
    14,792.88x = 229,519,719.94
  5. Step 5: Solve for x
    x = 229,519,719.94/14,792.88
  6. Step 6: Final answer
    x = 15,515.55

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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.