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Finding the Fourth Proportional to 42,546,987.90, 63,820,481.85 and 42,546,987.90

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Solution

The fourth proportional to 42,546,987.90, 63,820,481.85 and 42,546,987.90 is: 63,820,481.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,546,987.90 : 63,820,481.85 = 42,546,987.90 : x
  2. Step 2: Convert to fraction form
    42,546,987.90/63,820,481.85 = 42,546,987.90/x
  3. Step 3: Cross multiply
    42,546,987.90x = 63,820,481.85 × 42,546,987.90
  4. Step 4: Simplify right side
    42,546,987.90x = 2,715,369,269,044,119.50
  5. Step 5: Solve for x
    x = 2,715,369,269,044,119.50/42,546,987.90
  6. Step 6: Final answer
    x = 63,820,481.85

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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.