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Finding the Fourth Proportional to 20,628,117,579.60, 30,942,176,369.40 and 20,628,117,579.60

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Solution

The fourth proportional to 20,628,117,579.60, 30,942,176,369.40 and 20,628,117,579.60 is: 30,942,176,369.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628,117,579.60 : 30,942,176,369.40 = 20,628,117,579.60 : x
  2. Step 2: Convert to fraction form
    20,628,117,579.60/30,942,176,369.40 = 20,628,117,579.60/x
  3. Step 3: Cross multiply
    20,628,117,579.60x = 30,942,176,369.40 × 20,628,117,579.60
  4. Step 4: Simplify right side
    20,628,117,579.60x = 638,278,852,316,703,883,264
  5. Step 5: Solve for x
    x = 638,278,852,316,703,883,264/20,628,117,579.60
  6. Step 6: Final answer
    x = 30,942,176,369.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.