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Finding the Fourth Proportional to 611,823.69, 917,753.62 and 292,009.25

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Solution

The fourth proportional to 611,823.69, 917,753.62 and 292,009.25 is: 438,022.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,823.69 : 917,753.62 = 292,009.25 : x
  2. Step 2: Convert to fraction form
    611,823.69/917,753.62 = 292,009.25/x
  3. Step 3: Cross multiply
    611,823.69x = 917,753.62 × 292,009.25
  4. Step 4: Simplify right side
    611,823.69x = 267,992,546,260.99
  5. Step 5: Solve for x
    x = 267,992,546,260.99/611,823.69
  6. Step 6: Final answer
    x = 438,022.51

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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.