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Finding the Fourth Proportional to 79,730,972.80, 111,925,692.80 and 79,730,972.80

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Solution

The fourth proportional to 79,730,972.80, 111,925,692.80 and 79,730,972.80 is: 111,925,692.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,730,972.80 : 111,925,692.80 = 79,730,972.80 : x
  2. Step 2: Convert to fraction form
    79,730,972.80/111,925,692.80 = 79,730,972.80/x
  3. Step 3: Cross multiply
    79,730,972.80x = 111,925,692.80 × 79,730,972.80
  4. Step 4: Simplify right side
    79,730,972.80x = 8,923,944,368,257,955
  5. Step 5: Solve for x
    x = 8,923,944,368,257,955/79,730,972.80
  6. Step 6: Final answer
    x = 111,925,692.80

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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.