Home / 128,892,423,693.44-177,847,932,402.22-71,798,313,359.36

Finding the Fourth Proportional to 128,892,423,693.44, 177,847,932,402.22 and 71,798,313,359.36

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Solution

The fourth proportional to 128,892,423,693.44, 177,847,932,402.22 and 71,798,313,359.36 is: 99,068,519,429.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,892,423,693.44 : 177,847,932,402.22 = 71,798,313,359.36 : x
  2. Step 2: Convert to fraction form
    128,892,423,693.44/177,847,932,402.22 = 71,798,313,359.36/x
  3. Step 3: Cross multiply
    128,892,423,693.44x = 177,847,932,402.22 × 71,798,313,359.36
  4. Step 4: Simplify right side
    128,892,423,693.44x = 12,769,181,580,928,867,106,816
  5. Step 5: Solve for x
    x = 12,769,181,580,928,867,106,816/128,892,423,693.44
  6. Step 6: Final answer
    x = 99,068,519,429.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.