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Finding the Fourth Proportional to 21,193,488,000.60, 31,721,357,247.30 and 21,193,488,000.60

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Solution

The fourth proportional to 21,193,488,000.60, 31,721,357,247.30 and 21,193,488,000.60 is: 31,721,357,247.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,193,488,000.60 : 31,721,357,247.30 = 21,193,488,000.60 : x
  2. Step 2: Convert to fraction form
    21,193,488,000.60/31,721,357,247.30 = 21,193,488,000.60/x
  3. Step 3: Cross multiply
    21,193,488,000.60x = 31,721,357,247.30 × 21,193,488,000.60
  4. Step 4: Simplify right side
    21,193,488,000.60x = 672,286,204,183,398,318,080
  5. Step 5: Solve for x
    x = 672,286,204,183,398,318,080/21,193,488,000.60
  6. Step 6: Final answer
    x = 31,721,357,247.30

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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.