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Finding the Fourth Proportional to 70,927.70, 97,877.28 and 38,661.61

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Solution

The fourth proportional to 70,927.70, 97,877.28 and 38,661.61 is: 53,351.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,927.70 : 97,877.28 = 38,661.61 : x
  2. Step 2: Convert to fraction form
    70,927.70/97,877.28 = 38,661.61/x
  3. Step 3: Cross multiply
    70,927.70x = 97,877.28 × 38,661.61
  4. Step 4: Simplify right side
    70,927.70x = 3,784,093,227.22
  5. Step 5: Solve for x
    x = 3,784,093,227.22/70,927.70
  6. Step 6: Final answer
    x = 53,351.42

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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.