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Finding the Fourth Proportional to 453,403.98, 679,172.58 and 265,963.50

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Solution

The fourth proportional to 453,403.98, 679,172.58 and 265,963.50 is: 398,397.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,403.98 : 679,172.58 = 265,963.50 : x
  2. Step 2: Convert to fraction form
    453,403.98/679,172.58 = 265,963.50/x
  3. Step 3: Cross multiply
    453,403.98x = 679,172.58 × 265,963.50
  4. Step 4: Simplify right side
    453,403.98x = 180,635,116,480.83
  5. Step 5: Solve for x
    x = 180,635,116,480.83/453,403.98
  6. Step 6: Final answer
    x = 398,397.73

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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.