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Finding the Fourth Proportional to 70,806.88, 97,702.06 and 40,586.64

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Solution

The fourth proportional to 70,806.88, 97,702.06 and 40,586.64 is: 56,003.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,806.88 : 97,702.06 = 40,586.64 : x
  2. Step 2: Convert to fraction form
    70,806.88/97,702.06 = 40,586.64/x
  3. Step 3: Cross multiply
    70,806.88x = 97,702.06 × 40,586.64
  4. Step 4: Simplify right side
    70,806.88x = 3,965,398,336.48
  5. Step 5: Solve for x
    x = 3,965,398,336.48/70,806.88
  6. Step 6: Final answer
    x = 56,003.01

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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.