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Finding the Fourth Proportional to 139,927.01, 193,101.47 and 76,264.73

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Solution

The fourth proportional to 139,927.01, 193,101.47 and 76,264.73 is: 105,246.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,927.01 : 193,101.47 = 76,264.73 : x
  2. Step 2: Convert to fraction form
    139,927.01/193,101.47 = 76,264.73/x
  3. Step 3: Cross multiply
    139,927.01x = 193,101.47 × 76,264.73
  4. Step 4: Simplify right side
    139,927.01x = 14,726,831,090.83
  5. Step 5: Solve for x
    x = 14,726,831,090.83/139,927.01
  6. Step 6: Final answer
    x = 105,246.52

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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.