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Finding the Fourth Proportional to 336,997,985.60, 505,496,978.40 and 132,532,731.20

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Solution

The fourth proportional to 336,997,985.60, 505,496,978.40 and 132,532,731.20 is: 198,799,096.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,997,985.60 : 505,496,978.40 = 132,532,731.20 : x
  2. Step 2: Convert to fraction form
    336,997,985.60/505,496,978.40 = 132,532,731.20/x
  3. Step 3: Cross multiply
    336,997,985.60x = 505,496,978.40 × 132,532,731.20
  4. Step 4: Simplify right side
    336,997,985.60x = 66,994,895,160,699,408
  5. Step 5: Solve for x
    x = 66,994,895,160,699,408/336,997,985.60
  6. Step 6: Final answer
    x = 198,799,096.80

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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.