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Finding the Fourth Proportional to 70,744.75, 97,628.57 and 38,913.88

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Solution

The fourth proportional to 70,744.75, 97,628.57 and 38,913.88 is: 53,701.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,744.75 : 97,628.57 = 38,913.88 : x
  2. Step 2: Convert to fraction form
    70,744.75/97,628.57 = 38,913.88/x
  3. Step 3: Cross multiply
    70,744.75x = 97,628.57 × 38,913.88
  4. Step 4: Simplify right side
    70,744.75x = 3,799,106,457.55
  5. Step 5: Solve for x
    x = 3,799,106,457.55/70,744.75
  6. Step 6: Final answer
    x = 53,701.60

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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.