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Finding the Fourth Proportional to 92,112.66, 127,108.71 and 51,278.40

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Solution

The fourth proportional to 92,112.66, 127,108.71 and 51,278.40 is: 70,760.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,112.66 : 127,108.71 = 51,278.40 : x
  2. Step 2: Convert to fraction form
    92,112.66/127,108.71 = 51,278.40/x
  3. Step 3: Cross multiply
    92,112.66x = 127,108.71 × 51,278.40
  4. Step 4: Simplify right side
    92,112.66x = 6,517,931,274.86
  5. Step 5: Solve for x
    x = 6,517,931,274.86/92,112.66
  6. Step 6: Final answer
    x = 70,760.43

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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.