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Finding the Fourth Proportional to 92,112.63, 138,168.45 and 79,594.58

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Solution

The fourth proportional to 92,112.63, 138,168.45 and 79,594.58 is: 119,391.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,112.63 : 138,168.45 = 79,594.58 : x
  2. Step 2: Convert to fraction form
    92,112.63/138,168.45 = 79,594.58/x
  3. Step 3: Cross multiply
    92,112.63x = 138,168.45 × 79,594.58
  4. Step 4: Simplify right side
    92,112.63x = 10,997,459,056.16
  5. Step 5: Solve for x
    x = 10,997,459,056.16/92,112.63
  6. Step 6: Final answer
    x = 119,391.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.