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Finding the Fourth Proportional to 13,873.40, 20,810.10 and 4,513.40

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Solution

The fourth proportional to 13,873.40, 20,810.10 and 4,513.40 is: 6,770.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,873.40 : 20,810.10 = 4,513.40 : x
  2. Step 2: Convert to fraction form
    13,873.40/20,810.10 = 4,513.40/x
  3. Step 3: Cross multiply
    13,873.40x = 20,810.10 × 4,513.40
  4. Step 4: Simplify right side
    13,873.40x = 93,924,305.34
  5. Step 5: Solve for x
    x = 93,924,305.34/13,873.40
  6. Step 6: Final answer
    x = 6,770.10

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1.5x scale

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.