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Finding the Fourth Proportional to 42,457,286.85, 63,685,930.28 and 42,457,286.85

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Solution

The fourth proportional to 42,457,286.85, 63,685,930.28 and 42,457,286.85 is: 63,685,930.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,457,286.85 : 63,685,930.28 = 42,457,286.85 : x
  2. Step 2: Convert to fraction form
    42,457,286.85/63,685,930.28 = 42,457,286.85/x
  3. Step 3: Cross multiply
    42,457,286.85x = 63,685,930.28 × 42,457,286.85
  4. Step 4: Simplify right side
    42,457,286.85x = 2,703,931,809,994,774.50
  5. Step 5: Solve for x
    x = 2,703,931,809,994,774.50/42,457,286.85
  6. Step 6: Final answer
    x = 63,685,930.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.