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Finding the Fourth Proportional to 70,581.64, 97,403.88 and 38,751.88

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Solution

The fourth proportional to 70,581.64, 97,403.88 and 38,751.88 is: 53,478.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,581.64 : 97,403.88 = 38,751.88 : x
  2. Step 2: Convert to fraction form
    70,581.64/97,403.88 = 38,751.88/x
  3. Step 3: Cross multiply
    70,581.64x = 97,403.88 × 38,751.88
  4. Step 4: Simplify right side
    70,581.64x = 3,774,583,469.29
  5. Step 5: Solve for x
    x = 3,774,583,469.29/70,581.64
  6. Step 6: Final answer
    x = 53,478.26

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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.