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Finding the Fourth Proportional to 70,745.60, 97,628.76 and 40,531.04

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Solution

The fourth proportional to 70,745.60, 97,628.76 and 40,531.04 is: 55,932.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,745.60 : 97,628.76 = 40,531.04 : x
  2. Step 2: Convert to fraction form
    70,745.60/97,628.76 = 40,531.04/x
  3. Step 3: Cross multiply
    70,745.60x = 97,628.76 × 40,531.04
  4. Step 4: Simplify right side
    70,745.60x = 3,956,995,176.71
  5. Step 5: Solve for x
    x = 3,956,995,176.71/70,745.60
  6. Step 6: Final answer
    x = 55,932.74

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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.