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Finding the Fourth Proportional to 476,612.00, 714,917.69 and 139,652.45

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Solution

The fourth proportional to 476,612.00, 714,917.69 and 139,652.45 is: 209,478.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,612.00 : 714,917.69 = 139,652.45 : x
  2. Step 2: Convert to fraction form
    476,612.00/714,917.69 = 139,652.45/x
  3. Step 3: Cross multiply
    476,612.00x = 714,917.69 × 139,652.45
  4. Step 4: Simplify right side
    476,612.00x = 99,840,002,683.99
  5. Step 5: Solve for x
    x = 99,840,002,683.99/476,612.00
  6. Step 6: Final answer
    x = 209,478.58

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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.