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Finding the Fourth Proportional to 122,652.54, 169,262.01 and 74,253.81

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Solution

The fourth proportional to 122,652.54, 169,262.01 and 74,253.81 is: 102,471.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,652.54 : 169,262.01 = 74,253.81 : x
  2. Step 2: Convert to fraction form
    122,652.54/169,262.01 = 74,253.81/x
  3. Step 3: Cross multiply
    122,652.54x = 169,262.01 × 74,253.81
  4. Step 4: Simplify right side
    122,652.54x = 12,568,349,130.76
  5. Step 5: Solve for x
    x = 12,568,349,130.76/122,652.54
  6. Step 6: Final answer
    x = 102,471.17

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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.