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Finding the Fourth Proportional to 661,676.95, 988,033.55 and 525,209.97

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Solution

The fourth proportional to 661,676.95, 988,033.55 and 525,209.97 is: 784,257.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,676.95 : 988,033.55 = 525,209.97 : x
  2. Step 2: Convert to fraction form
    661,676.95/988,033.55 = 525,209.97/x
  3. Step 3: Cross multiply
    661,676.95x = 988,033.55 × 525,209.97
  4. Step 4: Simplify right side
    661,676.95x = 518,925,072,233.57
  5. Step 5: Solve for x
    x = 518,925,072,233.57/661,676.95
  6. Step 6: Final answer
    x = 784,257.44

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.