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Finding the Fourth Proportional to 8,621,206,051.80, 12,931,809,077.70 and 8,621,206,051.80

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Solution

The fourth proportional to 8,621,206,051.80, 12,931,809,077.70 and 8,621,206,051.80 is: 12,931,809,077.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621,206,051.80 : 12,931,809,077.70 = 8,621,206,051.80 : x
  2. Step 2: Convert to fraction form
    8,621,206,051.80/12,931,809,077.70 = 8,621,206,051.80/x
  3. Step 3: Cross multiply
    8,621,206,051.80x = 12,931,809,077.70 × 8,621,206,051.80
  4. Step 4: Simplify right side
    8,621,206,051.80x = 111,487,790,681,389,416,448
  5. Step 5: Solve for x
    x = 111,487,790,681,389,416,448/8,621,206,051.80
  6. Step 6: Final answer
    x = 12,931,809,077.70

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Double scale
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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.