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Finding the Fourth Proportional to 92,939.49, 128,256.81 and 52,660.71

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Solution

The fourth proportional to 92,939.49, 128,256.81 and 52,660.71 is: 72,671.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,939.49 : 128,256.81 = 52,660.71 : x
  2. Step 2: Convert to fraction form
    92,939.49/128,256.81 = 52,660.71/x
  3. Step 3: Cross multiply
    92,939.49x = 128,256.81 × 52,660.71
  4. Step 4: Simplify right side
    92,939.49x = 6,754,094,676.94
  5. Step 5: Solve for x
    x = 6,754,094,676.94/92,939.49
  6. Step 6: Final answer
    x = 72,671.96

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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.