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Finding the Fourth Proportional to 174,543.40, 261,839.40 and 74,702.80

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Solution

The fourth proportional to 174,543.40, 261,839.40 and 74,702.80 is: 112,064.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,543.40 : 261,839.40 = 74,702.80 : x
  2. Step 2: Convert to fraction form
    174,543.40/261,839.40 = 74,702.80/x
  3. Step 3: Cross multiply
    174,543.40x = 261,839.40 × 74,702.80
  4. Step 4: Simplify right side
    174,543.40x = 19,560,136,330.32
  5. Step 5: Solve for x
    x = 19,560,136,330.32/174,543.40
  6. Step 6: Final answer
    x = 112,064.60

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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.