Home / 12,879,620.40-19,319,430.60-11,906,410.80

Finding the Fourth Proportional to 12,879,620.40, 19,319,430.60 and 11,906,410.80

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Solution

The fourth proportional to 12,879,620.40, 19,319,430.60 and 11,906,410.80 is: 17,859,616.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879,620.40 : 19,319,430.60 = 11,906,410.80 : x
  2. Step 2: Convert to fraction form
    12,879,620.40/19,319,430.60 = 11,906,410.80/x
  3. Step 3: Cross multiply
    12,879,620.40x = 19,319,430.60 × 11,906,410.80
  4. Step 4: Simplify right side
    12,879,620.40x = 230,025,077,145,690.50
  5. Step 5: Solve for x
    x = 230,025,077,145,690.50/12,879,620.40
  6. Step 6: Final answer
    x = 17,859,616.20

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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.