Home / 15,912,196,434.56-21,958,852,856.82-8,678,261,400.68

Finding the Fourth Proportional to 15,912,196,434.56, 21,958,852,856.82 and 8,678,261,400.68

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Solution

The fourth proportional to 15,912,196,434.56, 21,958,852,856.82 and 8,678,261,400.68 is: 11,976,012,609.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,912,196,434.56 : 21,958,852,856.82 = 8,678,261,400.68 : x
  2. Step 2: Convert to fraction form
    15,912,196,434.56/21,958,852,856.82 = 8,678,261,400.68/x
  3. Step 3: Cross multiply
    15,912,196,434.56x = 21,958,852,856.82 × 8,678,261,400.68
  4. Step 4: Simplify right side
    15,912,196,434.56x = 190,564,665,150,552,768,512
  5. Step 5: Solve for x
    x = 190,564,665,150,552,768,512/15,912,196,434.56
  6. Step 6: Final answer
    x = 11,976,012,609.84

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Double scale
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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.