Home / 128,630,919,289.56-177,515,566,144.96-71,542,357,899.36

Finding the Fourth Proportional to 128,630,919,289.56, 177,515,566,144.96 and 71,542,357,899.36

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Solution

The fourth proportional to 128,630,919,289.56, 177,515,566,144.96 and 71,542,357,899.36 is: 98,731,177,822.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,630,919,289.56 : 177,515,566,144.96 = 71,542,357,899.36 : x
  2. Step 2: Convert to fraction form
    128,630,919,289.56/177,515,566,144.96 = 71,542,357,899.36/x
  3. Step 3: Cross multiply
    128,630,919,289.56x = 177,515,566,144.96 × 71,542,357,899.36
  4. Step 4: Simplify right side
    128,630,919,289.56x = 12,699,882,165,850,240,712,704
  5. Step 5: Solve for x
    x = 12,699,882,165,850,240,712,704/128,630,919,289.56
  6. Step 6: Final answer
    x = 98,731,177,822.51

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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.