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Finding the Fourth Proportional to 118,392.60, 163,367.04 and 67,411.92

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Solution

The fourth proportional to 118,392.60, 163,367.04 and 67,411.92 is: 93,020.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,392.60 : 163,367.04 = 67,411.92 : x
  2. Step 2: Convert to fraction form
    118,392.60/163,367.04 = 67,411.92/x
  3. Step 3: Cross multiply
    118,392.60x = 163,367.04 × 67,411.92
  4. Step 4: Simplify right side
    118,392.60x = 11,012,885,831.12
  5. Step 5: Solve for x
    x = 11,012,885,831.12/118,392.60
  6. Step 6: Final answer
    x = 93,020.05

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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.