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Finding the Fourth Proportional to 70,479.58, 97,257.07 and 38,647.80

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Solution

The fourth proportional to 70,479.58, 97,257.07 and 38,647.80 is: 53,331.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,479.58 : 97,257.07 = 38,647.80 : x
  2. Step 2: Convert to fraction form
    70,479.58/97,257.07 = 38,647.80/x
  3. Step 3: Cross multiply
    70,479.58x = 97,257.07 × 38,647.80
  4. Step 4: Simplify right side
    70,479.58x = 3,758,771,789.95
  5. Step 5: Solve for x
    x = 3,758,771,789.95/70,479.58
  6. Step 6: Final answer
    x = 53,331.36

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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.