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Finding the Fourth Proportional to 70,508.56, 97,318.76 and 47,885.28

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Solution

The fourth proportional to 70,508.56, 97,318.76 and 47,885.28 is: 66,093.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,508.56 : 97,318.76 = 47,885.28 : x
  2. Step 2: Convert to fraction form
    70,508.56/97,318.76 = 47,885.28/x
  3. Step 3: Cross multiply
    70,508.56x = 97,318.76 × 47,885.28
  4. Step 4: Simplify right side
    70,508.56x = 4,660,136,071.85
  5. Step 5: Solve for x
    x = 4,660,136,071.85/70,508.56
  6. Step 6: Final answer
    x = 66,093.20

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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.