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Finding the Fourth Proportional to 124,591.78, 171,953.10 and 70,866.43

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Solution

The fourth proportional to 124,591.78, 171,953.10 and 70,866.43 is: 97,805.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,591.78 : 171,953.10 = 70,866.43 : x
  2. Step 2: Convert to fraction form
    124,591.78/171,953.10 = 70,866.43/x
  3. Step 3: Cross multiply
    124,591.78x = 171,953.10 × 70,866.43
  4. Step 4: Simplify right side
    124,591.78x = 12,185,702,324.43
  5. Step 5: Solve for x
    x = 12,185,702,324.43/124,591.78
  6. Step 6: Final answer
    x = 97,805.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.