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Finding the Fourth Proportional to 79,009,969.70, 110,689,540.30 and 79,009,969.70

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Solution

The fourth proportional to 79,009,969.70, 110,689,540.30 and 79,009,969.70 is: 110,689,540.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,009,969.70 : 110,689,540.30 = 79,009,969.70 : x
  2. Step 2: Convert to fraction form
    79,009,969.70/110,689,540.30 = 79,009,969.70/x
  3. Step 3: Cross multiply
    79,009,969.70x = 110,689,540.30 × 79,009,969.70
  4. Step 4: Simplify right side
    79,009,969.70x = 8,745,577,225,209,929
  5. Step 5: Solve for x
    x = 8,745,577,225,209,929/79,009,969.70
  6. Step 6: Final answer
    x = 110,689,540.30

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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.