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Finding the Fourth Proportional to 653,479,262.40, 901,801,540.26 and 356,121,587.64

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Solution

The fourth proportional to 653,479,262.40, 901,801,540.26 and 356,121,587.64 is: 491,447,877.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,479,262.40 : 901,801,540.26 = 356,121,587.64 : x
  2. Step 2: Convert to fraction form
    653,479,262.40/901,801,540.26 = 356,121,587.64/x
  3. Step 3: Cross multiply
    653,479,262.40x = 901,801,540.26 × 356,121,587.64
  4. Step 4: Simplify right side
    653,479,262.40x = 321,150,996,253,588,544
  5. Step 5: Solve for x
    x = 321,150,996,253,588,544/653,479,262.40
  6. Step 6: Final answer
    x = 491,447,877.13

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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.