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Finding the Fourth Proportional to 14,484.60, 21,719.56 and 7,077.96

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Solution

The fourth proportional to 14,484.60, 21,719.56 and 7,077.96 is: 10,613.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,484.60 : 21,719.56 = 7,077.96 : x
  2. Step 2: Convert to fraction form
    14,484.60/21,719.56 = 7,077.96/x
  3. Step 3: Cross multiply
    14,484.60x = 21,719.56 × 7,077.96
  4. Step 4: Simplify right side
    14,484.60x = 153,730,176.90
  5. Step 5: Solve for x
    x = 153,730,176.90/14,484.60
  6. Step 6: Final answer
    x = 10,613.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.