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Finding the Fourth Proportional to 124,490.56, 171,796.18 and 70,775.60

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Solution

The fourth proportional to 124,490.56, 171,796.18 and 70,775.60 is: 97,669.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,490.56 : 171,796.18 = 70,775.60 : x
  2. Step 2: Convert to fraction form
    124,490.56/171,796.18 = 70,775.60/x
  3. Step 3: Cross multiply
    124,490.56x = 171,796.18 × 70,775.60
  4. Step 4: Simplify right side
    124,490.56x = 12,158,977,717.21
  5. Step 5: Solve for x
    x = 12,158,977,717.21/124,490.56
  6. Step 6: Final answer
    x = 97,669.88

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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.