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Finding the Fourth Proportional to 129,065,901.80, 180,826,631.80 and 129,065,901.80

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Solution

The fourth proportional to 129,065,901.80, 180,826,631.80 and 129,065,901.80 is: 180,826,631.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,065,901.80 : 180,826,631.80 = 129,065,901.80 : x
  2. Step 2: Convert to fraction form
    129,065,901.80/180,826,631.80 = 129,065,901.80/x
  3. Step 3: Cross multiply
    129,065,901.80x = 180,826,631.80 × 129,065,901.80
  4. Step 4: Simplify right side
    129,065,901.80x = 23,338,552,302,723,560
  5. Step 5: Solve for x
    x = 23,338,552,302,723,560/129,065,901.80
  6. Step 6: Final answer
    x = 180,826,631.80

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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.