Home / 12,169,640.20-18,254,460.30-12,085,659.40

Finding the Fourth Proportional to 12,169,640.20, 18,254,460.30 and 12,085,659.40

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Solution

The fourth proportional to 12,169,640.20, 18,254,460.30 and 12,085,659.40 is: 18,128,489.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,169,640.20 : 18,254,460.30 = 12,085,659.40 : x
  2. Step 2: Convert to fraction form
    12,169,640.20/18,254,460.30 = 12,085,659.40/x
  3. Step 3: Cross multiply
    12,169,640.20x = 18,254,460.30 × 12,085,659.40
  4. Step 4: Simplify right side
    12,169,640.20x = 220,617,189,716,621.84
  5. Step 5: Solve for x
    x = 220,617,189,716,621.84/12,169,640.20
  6. Step 6: Final answer
    x = 18,128,489.10

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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.