Home / 28,378,729,019.89-39,144,193,093.69-18,201,336,543.06

Finding the Fourth Proportional to 28,378,729,019.89, 39,144,193,093.69 and 18,201,336,543.06

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Solution

The fourth proportional to 28,378,729,019.89, 39,144,193,093.69 and 18,201,336,543.06 is: 25,106,009,212.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,378,729,019.89 : 39,144,193,093.69 = 18,201,336,543.06 : x
  2. Step 2: Convert to fraction form
    28,378,729,019.89/39,144,193,093.69 = 18,201,336,543.06/x
  3. Step 3: Cross multiply
    28,378,729,019.89x = 39,144,193,093.69 × 18,201,336,543.06
  4. Step 4: Simplify right side
    28,378,729,019.89x = 712,476,632,204,842,106,880
  5. Step 5: Solve for x
    x = 712,476,632,204,842,106,880/28,378,729,019.89
  6. Step 6: Final answer
    x = 25,106,009,212.23

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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.