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Finding the Fourth Proportional to 101,090.53, 139,459.79 and 58,624.43

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Solution

The fourth proportional to 101,090.53, 139,459.79 and 58,624.43 is: 80,875.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,090.53 : 139,459.79 = 58,624.43 : x
  2. Step 2: Convert to fraction form
    101,090.53/139,459.79 = 58,624.43/x
  3. Step 3: Cross multiply
    101,090.53x = 139,459.79 × 58,624.43
  4. Step 4: Simplify right side
    101,090.53x = 8,175,750,403.55
  5. Step 5: Solve for x
    x = 8,175,750,403.55/101,090.53
  6. Step 6: Final answer
    x = 80,875.54

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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.