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Finding the Fourth Proportional to 6,387,699.96, 8,815,061.74 and 3,634,387.32

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Solution

The fourth proportional to 6,387,699.96, 8,815,061.74 and 3,634,387.32 is: 5,015,474.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387,699.96 : 8,815,061.74 = 3,634,387.32 : x
  2. Step 2: Convert to fraction form
    6,387,699.96/8,815,061.74 = 3,634,387.32/x
  3. Step 3: Cross multiply
    6,387,699.96x = 8,815,061.74 × 3,634,387.32
  4. Step 4: Simplify right side
    6,387,699.96x = 32,037,348,566,344.18
  5. Step 5: Solve for x
    x = 32,037,348,566,344.18/6,387,699.96
  6. Step 6: Final answer
    x = 5,015,474.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.