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Finding the Fourth Proportional to 70,431.66, 105,581.88 and 35,330.58

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Solution

The fourth proportional to 70,431.66, 105,581.88 and 35,330.58 is: 52,962.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,431.66 : 105,581.88 = 35,330.58 : x
  2. Step 2: Convert to fraction form
    70,431.66/105,581.88 = 35,330.58/x
  3. Step 3: Cross multiply
    70,431.66x = 105,581.88 × 35,330.58
  4. Step 4: Simplify right side
    70,431.66x = 3,730,269,057.89
  5. Step 5: Solve for x
    x = 3,730,269,057.89/70,431.66
  6. Step 6: Final answer
    x = 52,962.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.