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Finding the Fourth Proportional to 814,244,719.65, 1,221,367,079.48 and 814,244,719.65

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Solution

The fourth proportional to 814,244,719.65, 1,221,367,079.48 and 814,244,719.65 is: 1,221,367,079.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,244,719.65 : 1,221,367,079.48 = 814,244,719.65 : x
  2. Step 2: Convert to fraction form
    814,244,719.65/1,221,367,079.48 = 814,244,719.65/x
  3. Step 3: Cross multiply
    814,244,719.65x = 1,221,367,079.48 × 814,244,719.65
  4. Step 4: Simplify right side
    814,244,719.65x = 994,491,695,216,860,544
  5. Step 5: Solve for x
    x = 994,491,695,216,860,544/814,244,719.65
  6. Step 6: Final answer
    x = 1,221,367,079.48

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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.