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Finding the Fourth Proportional to 406,762.95, 561,143.02 and 255,943.11

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Solution

The fourth proportional to 406,762.95, 561,143.02 and 255,943.11 is: 353,082.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,762.95 : 561,143.02 = 255,943.11 : x
  2. Step 2: Convert to fraction form
    406,762.95/561,143.02 = 255,943.11/x
  3. Step 3: Cross multiply
    406,762.95x = 561,143.02 × 255,943.11
  4. Step 4: Simplify right side
    406,762.95x = 143,620,691,194.84
  5. Step 5: Solve for x
    x = 143,620,691,194.84/406,762.95
  6. Step 6: Final answer
    x = 353,082.04

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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.