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Finding the Fourth Proportional to 633,980.73, 874,983.12 and 392,341.11

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Solution

The fourth proportional to 633,980.73, 874,983.12 and 392,341.11 is: 541,486.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,980.73 : 874,983.12 = 392,341.11 : x
  2. Step 2: Convert to fraction form
    633,980.73/874,983.12 = 392,341.11/x
  3. Step 3: Cross multiply
    633,980.73x = 874,983.12 × 392,341.11
  4. Step 4: Simplify right side
    633,980.73x = 343,291,848,532.06
  5. Step 5: Solve for x
    x = 343,291,848,532.06/633,980.73
  6. Step 6: Final answer
    x = 541,486.25

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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.