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Finding the Fourth Proportional to 72,330.66, 99,749.70 and 49,629.60

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Solution

The fourth proportional to 72,330.66, 99,749.70 and 49,629.60 is: 68,443.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,330.66 : 99,749.70 = 49,629.60 : x
  2. Step 2: Convert to fraction form
    72,330.66/99,749.70 = 49,629.60/x
  3. Step 3: Cross multiply
    72,330.66x = 99,749.70 × 49,629.60
  4. Step 4: Simplify right side
    72,330.66x = 4,950,537,711.12
  5. Step 5: Solve for x
    x = 4,950,537,711.12/72,330.66
  6. Step 6: Final answer
    x = 68,443.14

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.