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Finding the Fourth Proportional to 193,045.80, 289,655.10 and 87,810.60

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Solution

The fourth proportional to 193,045.80, 289,655.10 and 87,810.60 is: 131,755.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,045.80 : 289,655.10 = 87,810.60 : x
  2. Step 2: Convert to fraction form
    193,045.80/289,655.10 = 87,810.60/x
  3. Step 3: Cross multiply
    193,045.80x = 289,655.10 × 87,810.60
  4. Step 4: Simplify right side
    193,045.80x = 25,434,788,124.06
  5. Step 5: Solve for x
    x = 25,434,788,124.06/193,045.80
  6. Step 6: Final answer
    x = 131,755.20

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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.