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Finding the Fourth Proportional to 119,545.87, 164,969.70 and 65,831.18

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Solution

The fourth proportional to 119,545.87, 164,969.70 and 65,831.18 is: 90,845.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,545.87 : 164,969.70 = 65,831.18 : x
  2. Step 2: Convert to fraction form
    119,545.87/164,969.70 = 65,831.18/x
  3. Step 3: Cross multiply
    119,545.87x = 164,969.70 × 65,831.18
  4. Step 4: Simplify right side
    119,545.87x = 10,860,149,686.09
  5. Step 5: Solve for x
    x = 10,860,149,686.09/119,545.87
  6. Step 6: Final answer
    x = 90,845.04

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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.