Home / 19,378,719.60-29,068,079.40-13,639,156.80

Finding the Fourth Proportional to 19,378,719.60, 29,068,079.40 and 13,639,156.80

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Solution

The fourth proportional to 19,378,719.60, 29,068,079.40 and 13,639,156.80 is: 20,458,735.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,378,719.60 : 29,068,079.40 = 13,639,156.80 : x
  2. Step 2: Convert to fraction form
    19,378,719.60/29,068,079.40 = 13,639,156.80/x
  3. Step 3: Cross multiply
    19,378,719.60x = 29,068,079.40 × 13,639,156.80
  4. Step 4: Simplify right side
    19,378,719.60x = 396,464,092,811,449.94
  5. Step 5: Solve for x
    x = 396,464,092,811,449.94/19,378,719.60
  6. Step 6: Final answer
    x = 20,458,735.20

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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.