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Finding the Fourth Proportional to 178,713.80, 267,840.30 and 136,953.80

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Solution

The fourth proportional to 178,713.80, 267,840.30 and 136,953.80 is: 205,254.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,713.80 : 267,840.30 = 136,953.80 : x
  2. Step 2: Convert to fraction form
    178,713.80/267,840.30 = 136,953.80/x
  3. Step 3: Cross multiply
    178,713.80x = 267,840.30 × 136,953.80
  4. Step 4: Simplify right side
    178,713.80x = 36,681,746,878.14
  5. Step 5: Solve for x
    x = 36,681,746,878.14/178,713.80
  6. Step 6: Final answer
    x = 205,254.14

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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.