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Finding the Fourth Proportional to 375,908,746.21, 518,711,997.18 and 208,652,056.96

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Solution

The fourth proportional to 375,908,746.21, 518,711,997.18 and 208,652,056.96 is: 287,916,485.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,908,746.21 : 518,711,997.18 = 208,652,056.96 : x
  2. Step 2: Convert to fraction form
    375,908,746.21/518,711,997.18 = 208,652,056.96/x
  3. Step 3: Cross multiply
    375,908,746.21x = 518,711,997.18 × 208,652,056.96
  4. Step 4: Simplify right side
    375,908,746.21x = 108,230,325,181,436,720
  5. Step 5: Solve for x
    x = 108,230,325,181,436,720/375,908,746.21
  6. Step 6: Final answer
    x = 287,916,485.78

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