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Finding the Fourth Proportional to 74,259.96, 102,491.60 and 56,324.92

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Solution

The fourth proportional to 74,259.96, 102,491.60 and 56,324.92 is: 77,738.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,259.96 : 102,491.60 = 56,324.92 : x
  2. Step 2: Convert to fraction form
    74,259.96/102,491.60 = 56,324.92/x
  3. Step 3: Cross multiply
    74,259.96x = 102,491.60 × 56,324.92
  4. Step 4: Simplify right side
    74,259.96x = 5,772,831,170.67
  5. Step 5: Solve for x
    x = 5,772,831,170.67/74,259.96
  6. Step 6: Final answer
    x = 77,738.14

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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.