Home / 13,186,859.20-19,780,288.80-8,085,025.60

Finding the Fourth Proportional to 13,186,859.20, 19,780,288.80 and 8,085,025.60

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Solution

The fourth proportional to 13,186,859.20, 19,780,288.80 and 8,085,025.60 is: 12,127,538.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186,859.20 : 19,780,288.80 = 8,085,025.60 : x
  2. Step 2: Convert to fraction form
    13,186,859.20/19,780,288.80 = 8,085,025.60/x
  3. Step 3: Cross multiply
    13,186,859.20x = 19,780,288.80 × 8,085,025.60
  4. Step 4: Simplify right side
    13,186,859.20x = 159,924,141,323,393.28
  5. Step 5: Solve for x
    x = 159,924,141,323,393.28/13,186,859.20
  6. Step 6: Final answer
    x = 12,127,538.40

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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.