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Finding the Fourth Proportional to 85,835.54, 118,424.68 and 51,831.10

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Solution

The fourth proportional to 85,835.54, 118,424.68 and 51,831.10 is: 71,509.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,835.54 : 118,424.68 = 51,831.10 : x
  2. Step 2: Convert to fraction form
    85,835.54/118,424.68 = 51,831.10/x
  3. Step 3: Cross multiply
    85,835.54x = 118,424.68 × 51,831.10
  4. Step 4: Simplify right side
    85,835.54x = 6,138,081,908.09
  5. Step 5: Solve for x
    x = 6,138,081,908.09/85,835.54
  6. Step 6: Final answer
    x = 71,509.80

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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.