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Finding the Fourth Proportional to 14,809,619.52, 20,431,245.60 and 9,651,101.76

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Solution

The fourth proportional to 14,809,619.52, 20,431,245.60 and 9,651,101.76 is: 13,314,591.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,809,619.52 : 20,431,245.60 = 9,651,101.76 : x
  2. Step 2: Convert to fraction form
    14,809,619.52/20,431,245.60 = 9,651,101.76/x
  3. Step 3: Cross multiply
    14,809,619.52x = 20,431,245.60 × 9,651,101.76
  4. Step 4: Simplify right side
    14,809,619.52x = 197,184,030,369,152.28
  5. Step 5: Solve for x
    x = 197,184,030,369,152.28/14,809,619.52
  6. Step 6: Final answer
    x = 13,314,591.24

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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.