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Finding the Fourth Proportional to 354,358,697.47, 531,563,585.64 and 136,009,039.55

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Solution

The fourth proportional to 354,358,697.47, 531,563,585.64 and 136,009,039.55 is: 204,023,361.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,358,697.47 : 531,563,585.64 = 136,009,039.55 : x
  2. Step 2: Convert to fraction form
    354,358,697.47/531,563,585.64 = 136,009,039.55/x
  3. Step 3: Cross multiply
    354,358,697.47x = 531,563,585.64 × 136,009,039.55
  4. Step 4: Simplify right side
    354,358,697.47x = 72,297,452,740,617,472
  5. Step 5: Solve for x
    x = 72,297,452,740,617,472/354,358,697.47
  6. Step 6: Final answer
    x = 204,023,361.80

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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.