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Finding the Fourth Proportional to 640,052.08, 883,239.39 and 353,516.81

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Solution

The fourth proportional to 640,052.08, 883,239.39 and 353,516.81 is: 487,835.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,052.08 : 883,239.39 = 353,516.81 : x
  2. Step 2: Convert to fraction form
    640,052.08/883,239.39 = 353,516.81/x
  3. Step 3: Cross multiply
    640,052.08x = 883,239.39 × 353,516.81
  4. Step 4: Simplify right side
    640,052.08x = 312,239,967,202.95
  5. Step 5: Solve for x
    x = 312,239,967,202.95/640,052.08
  6. Step 6: Final answer
    x = 487,835.25

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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.