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Finding the Fourth Proportional to 7,641,013.90, 11,461,520.85 and 7,641,013.90

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Solution

The fourth proportional to 7,641,013.90, 11,461,520.85 and 7,641,013.90 is: 11,461,520.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,641,013.90 : 11,461,520.85 = 7,641,013.90 : x
  2. Step 2: Convert to fraction form
    7,641,013.90/11,461,520.85 = 7,641,013.90/x
  3. Step 3: Cross multiply
    7,641,013.90x = 11,461,520.85 × 7,641,013.90
  4. Step 4: Simplify right side
    7,641,013.90x = 87,577,640,129,989.81
  5. Step 5: Solve for x
    x = 87,577,640,129,989.81/7,641,013.90
  6. Step 6: Final answer
    x = 11,461,520.85

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Similar ratio
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1.5x scale

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.