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Finding the Fourth Proportional to 39,863,205.60, 55,846,279.20 and 39,863,205.60

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Solution

The fourth proportional to 39,863,205.60, 55,846,279.20 and 39,863,205.60 is: 55,846,279.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,863,205.60 : 55,846,279.20 = 39,863,205.60 : x
  2. Step 2: Convert to fraction form
    39,863,205.60/55,846,279.20 = 39,863,205.60/x
  3. Step 3: Cross multiply
    39,863,205.60x = 55,846,279.20 × 39,863,205.60
  4. Step 4: Simplify right side
    39,863,205.60x = 2,226,211,709,744,603.75
  5. Step 5: Solve for x
    x = 2,226,211,709,744,603.75/39,863,205.60
  6. Step 6: Final answer
    x = 55,846,279.20

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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.