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Finding the Fourth Proportional to 28,334,447.20, 39,743,808.80 and 28,334,447.20

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Solution

The fourth proportional to 28,334,447.20, 39,743,808.80 and 28,334,447.20 is: 39,743,808.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,334,447.20 : 39,743,808.80 = 28,334,447.20 : x
  2. Step 2: Convert to fraction form
    28,334,447.20/39,743,808.80 = 28,334,447.20/x
  3. Step 3: Cross multiply
    28,334,447.20x = 39,743,808.80 × 28,334,447.20
  4. Step 4: Simplify right side
    28,334,447.20x = 1,126,118,851,970,495.25
  5. Step 5: Solve for x
    x = 1,126,118,851,970,495.25/28,334,447.20
  6. Step 6: Final answer
    x = 39,743,808.80

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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.