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Finding the Fourth Proportional to 14,483.60, 19,991.88 and 11,504.72

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Solution

The fourth proportional to 14,483.60, 19,991.88 and 11,504.72 is: 15,880.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,483.60 : 19,991.88 = 11,504.72 : x
  2. Step 2: Convert to fraction form
    14,483.60/19,991.88 = 11,504.72/x
  3. Step 3: Cross multiply
    14,483.60x = 19,991.88 × 11,504.72
  4. Step 4: Simplify right side
    14,483.60x = 230,000,981.67
  5. Step 5: Solve for x
    x = 230,000,981.67/14,483.60
  6. Step 6: Final answer
    x = 15,880.10

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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.