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Finding the Fourth Proportional to 70,139.64, 96,789.06 and 38,302.32

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Solution

The fourth proportional to 70,139.64, 96,789.06 and 38,302.32 is: 52,855.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,139.64 : 96,789.06 = 38,302.32 : x
  2. Step 2: Convert to fraction form
    70,139.64/96,789.06 = 38,302.32/x
  3. Step 3: Cross multiply
    70,139.64x = 96,789.06 × 38,302.32
  4. Step 4: Simplify right side
    70,139.64x = 3,707,245,548.62
  5. Step 5: Solve for x
    x = 3,707,245,548.62/70,139.64
  6. Step 6: Final answer
    x = 52,855.21

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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.