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Finding the Fourth Proportional to 20,418,404.40, 28,607,023.80 and 20,418,404.40

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Solution

The fourth proportional to 20,418,404.40, 28,607,023.80 and 20,418,404.40 is: 28,607,023.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,418,404.40 : 28,607,023.80 = 20,418,404.40 : x
  2. Step 2: Convert to fraction form
    20,418,404.40/28,607,023.80 = 20,418,404.40/x
  3. Step 3: Cross multiply
    20,418,404.40x = 28,607,023.80 × 20,418,404.40
  4. Step 4: Simplify right side
    20,418,404.40x = 584,109,780,628,824.75
  5. Step 5: Solve for x
    x = 584,109,780,628,824.75/20,418,404.40
  6. Step 6: Final answer
    x = 28,607,023.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.