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Finding the Fourth Proportional to 74,916.50, 103,288.29 and 53,430.74

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Solution

The fourth proportional to 74,916.50, 103,288.29 and 53,430.74 is: 73,665.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,916.50 : 103,288.29 = 53,430.74 : x
  2. Step 2: Convert to fraction form
    74,916.50/103,288.29 = 53,430.74/x
  3. Step 3: Cross multiply
    74,916.50x = 103,288.29 × 53,430.74
  4. Step 4: Simplify right side
    74,916.50x = 5,518,770,032.96
  5. Step 5: Solve for x
    x = 5,518,770,032.96/74,916.50
  6. Step 6: Final answer
    x = 73,665.62

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