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Finding the Fourth Proportional to 20,793,153,719.80, 31,189,730,579.70 and 20,793,153,719.80

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Solution

The fourth proportional to 20,793,153,719.80, 31,189,730,579.70 and 20,793,153,719.80 is: 31,189,730,579.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793,153,719.80 : 31,189,730,579.70 = 20,793,153,719.80 : x
  2. Step 2: Convert to fraction form
    20,793,153,719.80/31,189,730,579.70 = 20,793,153,719.80/x
  3. Step 3: Cross multiply
    20,793,153,719.80x = 31,189,730,579.70 × 20,793,153,719.80
  4. Step 4: Simplify right side
    20,793,153,719.80x = 648,532,862,422,848,897,024
  5. Step 5: Solve for x
    x = 648,532,862,422,848,897,024/20,793,153,719.80
  6. Step 6: Final answer
    x = 31,189,730,579.70

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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.