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Finding the Fourth Proportional to 611,891.83, 917,578.19 and 291,673.25

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Solution

The fourth proportional to 611,891.83, 917,578.19 and 291,673.25 is: 437,386.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,891.83 : 917,578.19 = 291,673.25 : x
  2. Step 2: Convert to fraction form
    611,891.83/917,578.19 = 291,673.25/x
  3. Step 3: Cross multiply
    611,891.83x = 917,578.19 × 291,673.25
  4. Step 4: Simplify right side
    611,891.83x = 267,633,012,388.63
  5. Step 5: Solve for x
    x = 267,633,012,388.63/611,891.83
  6. Step 6: Final answer
    x = 437,386.15

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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.