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Finding the Fourth Proportional to 210,567,408.60, 315,851,112.90 and 210,567,408.60

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Solution

The fourth proportional to 210,567,408.60, 315,851,112.90 and 210,567,408.60 is: 315,851,112.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,567,408.60 : 315,851,112.90 = 210,567,408.60 : x
  2. Step 2: Convert to fraction form
    210,567,408.60/315,851,112.90 = 210,567,408.60/x
  3. Step 3: Cross multiply
    210,567,408.60x = 315,851,112.90 × 210,567,408.60
  4. Step 4: Simplify right side
    210,567,408.60x = 66,507,950,346,779,024
  5. Step 5: Solve for x
    x = 66,507,950,346,779,024/210,567,408.60
  6. Step 6: Final answer
    x = 315,851,112.90

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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.