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Finding the Fourth Proportional to 639,225.84, 881,759.61 and 409,701.81

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Solution

The fourth proportional to 639,225.84, 881,759.61 and 409,701.81 is: 565,150.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,225.84 : 881,759.61 = 409,701.81 : x
  2. Step 2: Convert to fraction form
    639,225.84/881,759.61 = 409,701.81/x
  3. Step 3: Cross multiply
    639,225.84x = 881,759.61 × 409,701.81
  4. Step 4: Simplify right side
    639,225.84x = 361,258,508,201.89
  5. Step 5: Solve for x
    x = 361,258,508,201.89/639,225.84
  6. Step 6: Final answer
    x = 565,150.04

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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.