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Finding the Fourth Proportional to 86,213.52, 118,973.88 and 48,486.96

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Solution

The fourth proportional to 86,213.52, 118,973.88 and 48,486.96 is: 66,911.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,213.52 : 118,973.88 = 48,486.96 : x
  2. Step 2: Convert to fraction form
    86,213.52/118,973.88 = 48,486.96/x
  3. Step 3: Cross multiply
    86,213.52x = 118,973.88 × 48,486.96
  4. Step 4: Simplify right side
    86,213.52x = 5,768,681,760.60
  5. Step 5: Solve for x
    x = 5,768,681,760.60/86,213.52
  6. Step 6: Final answer
    x = 66,911.57

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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.