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Finding the Fourth Proportional to 718,999.17, 992,578.40 and 447,154.63

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Solution

The fourth proportional to 718,999.17, 992,578.40 and 447,154.63 is: 617,297.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,999.17 : 992,578.40 = 447,154.63 : x
  2. Step 2: Convert to fraction form
    718,999.17/992,578.40 = 447,154.63/x
  3. Step 3: Cross multiply
    718,999.17x = 992,578.40 × 447,154.63
  4. Step 4: Simplify right side
    718,999.17x = 443,836,027,197.99
  5. Step 5: Solve for x
    x = 443,836,027,197.99/718,999.17
  6. Step 6: Final answer
    x = 617,297.00

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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.