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Finding the Fourth Proportional to 70,068.88, 96,697.20 and 39,858.56

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Solution

The fourth proportional to 70,068.88, 96,697.20 and 39,858.56 is: 55,006.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,068.88 : 96,697.20 = 39,858.56 : x
  2. Step 2: Convert to fraction form
    70,068.88/96,697.20 = 39,858.56/x
  3. Step 3: Cross multiply
    70,068.88x = 96,697.20 × 39,858.56
  4. Step 4: Simplify right side
    70,068.88x = 3,854,211,148.03
  5. Step 5: Solve for x
    x = 3,854,211,148.03/70,068.88
  6. Step 6: Final answer
    x = 55,006.03

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1.5x scale

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.