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Finding the Fourth Proportional to 451,503.09, 623,086.16 and 255,253.95

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Solution

The fourth proportional to 451,503.09, 623,086.16 and 255,253.95 is: 352,257.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,503.09 : 623,086.16 = 255,253.95 : x
  2. Step 2: Convert to fraction form
    451,503.09/623,086.16 = 255,253.95/x
  3. Step 3: Cross multiply
    451,503.09x = 623,086.16 × 255,253.95
  4. Step 4: Simplify right side
    451,503.09x = 159,045,202,254.06
  5. Step 5: Solve for x
    x = 159,045,202,254.06/451,503.09
  6. Step 6: Final answer
    x = 352,257.17

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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.