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Finding the Fourth Proportional to 13,607,739.60, 20,411,609.40 and 12,568,477.20

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Solution

The fourth proportional to 13,607,739.60, 20,411,609.40 and 12,568,477.20 is: 18,852,715.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,607,739.60 : 20,411,609.40 = 12,568,477.20 : x
  2. Step 2: Convert to fraction form
    13,607,739.60/20,411,609.40 = 12,568,477.20/x
  3. Step 3: Cross multiply
    13,607,739.60x = 20,411,609.40 × 12,568,477.20
  4. Step 4: Simplify right side
    13,607,739.60x = 256,542,847,359,205.66
  5. Step 5: Solve for x
    x = 256,542,847,359,205.66/13,607,739.60
  6. Step 6: Final answer
    x = 18,852,715.80

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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.