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Finding the Fourth Proportional to 543,281,078.20, 814,921,617.30 and 543,281,078.20

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Solution

The fourth proportional to 543,281,078.20, 814,921,617.30 and 543,281,078.20 is: 814,921,617.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,281,078.20 : 814,921,617.30 = 543,281,078.20 : x
  2. Step 2: Convert to fraction form
    543,281,078.20/814,921,617.30 = 543,281,078.20/x
  3. Step 3: Cross multiply
    543,281,078.20x = 814,921,617.30 × 543,281,078.20
  4. Step 4: Simplify right side
    543,281,078.20x = 442,731,494,895,231,808
  5. Step 5: Solve for x
    x = 442,731,494,895,231,808/543,281,078.20
  6. Step 6: Final answer
    x = 814,921,617.30

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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.