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Finding the Fourth Proportional to 136,543.70, 204,815.55 and 117,516.80

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Solution

The fourth proportional to 136,543.70, 204,815.55 and 117,516.80 is: 176,275.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,543.70 : 204,815.55 = 117,516.80 : x
  2. Step 2: Convert to fraction form
    136,543.70/204,815.55 = 117,516.80/x
  3. Step 3: Cross multiply
    136,543.70x = 204,815.55 × 117,516.80
  4. Step 4: Simplify right side
    136,543.70x = 24,069,268,026.24
  5. Step 5: Solve for x
    x = 24,069,268,026.24/136,543.70
  6. Step 6: Final answer
    x = 176,275.20

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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.