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Finding the Fourth Proportional to 13,741,337.20, 20,612,005.80 and 13,426,409.20

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Solution

The fourth proportional to 13,741,337.20, 20,612,005.80 and 13,426,409.20 is: 20,139,613.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,741,337.20 : 20,612,005.80 = 13,426,409.20 : x
  2. Step 2: Convert to fraction form
    13,741,337.20/20,612,005.80 = 13,426,409.20/x
  3. Step 3: Cross multiply
    13,741,337.20x = 20,612,005.80 × 13,426,409.20
  4. Step 4: Simplify right side
    13,741,337.20x = 276,745,224,303,573.34
  5. Step 5: Solve for x
    x = 276,745,224,303,573.34/13,741,337.20
  6. Step 6: Final answer
    x = 20,139,613.80

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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.