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Finding the Fourth Proportional to 70,157.63, 96,819.65 and 38,328.57

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Solution

The fourth proportional to 70,157.63, 96,819.65 and 38,328.57 is: 52,894.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,157.63 : 96,819.65 = 38,328.57 : x
  2. Step 2: Convert to fraction form
    70,157.63/96,819.65 = 38,328.57/x
  3. Step 3: Cross multiply
    70,157.63x = 96,819.65 × 38,328.57
  4. Step 4: Simplify right side
    70,157.63x = 3,710,958,540.76
  5. Step 5: Solve for x
    x = 3,710,958,540.76/70,157.63
  6. Step 6: Final answer
    x = 52,894.59

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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.