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Finding the Fourth Proportional to 118,364.60, 163,336.53 and 67,389.78

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Solution

The fourth proportional to 118,364.60, 163,336.53 and 67,389.78 is: 92,994.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,364.60 : 163,336.53 = 67,389.78 : x
  2. Step 2: Convert to fraction form
    118,364.60/163,336.53 = 67,389.78/x
  3. Step 3: Cross multiply
    118,364.60x = 163,336.53 × 67,389.78
  4. Step 4: Simplify right side
    118,364.60x = 11,007,213,687.89
  5. Step 5: Solve for x
    x = 11,007,213,687.89/118,364.60
  6. Step 6: Final answer
    x = 92,994.13

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1.5x scale

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.