Home / 128,587,649-177,451,024.74-70,644,629.48

Finding the Fourth Proportional to 128,587,649, 177,451,024.74 and 70,644,629.48

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Solution

The fourth proportional to 128,587,649, 177,451,024.74 and 70,644,629.48 is: 97,489,626.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,587,649 : 177,451,024.74 = 70,644,629.48 : x
  2. Step 2: Convert to fraction form
    128,587,649/177,451,024.74 = 70,644,629.48/x
  3. Step 3: Cross multiply
    128,587,649x = 177,451,024.74 × 70,644,629.48
  4. Step 4: Simplify right side
    128,587,649x = 12,535,961,893,603,614
  5. Step 5: Solve for x
    x = 12,535,961,893,603,614/128,587,649
  6. Step 6: Final answer
    x = 97,489,626.66

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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.