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Finding the Fourth Proportional to 70,165.86, 96,830.28 and 38,336.73

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Solution

The fourth proportional to 70,165.86, 96,830.28 and 38,336.73 is: 52,905.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,165.86 : 96,830.28 = 38,336.73 : x
  2. Step 2: Convert to fraction form
    70,165.86/96,830.28 = 38,336.73/x
  3. Step 3: Cross multiply
    70,165.86x = 96,830.28 × 38,336.73
  4. Step 4: Simplify right side
    70,165.86x = 3,712,156,300.18
  5. Step 5: Solve for x
    x = 3,712,156,300.18/70,165.86
  6. Step 6: Final answer
    x = 52,905.45

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Double scale
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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.