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Finding the Fourth Proportional to 86,100.98, 118,851.58 and 64,652.68

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Solution

The fourth proportional to 86,100.98, 118,851.58 and 64,652.68 is: 89,244.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,100.98 : 118,851.58 = 64,652.68 : x
  2. Step 2: Convert to fraction form
    86,100.98/118,851.58 = 64,652.68/x
  3. Step 3: Cross multiply
    86,100.98x = 118,851.58 × 64,652.68
  4. Step 4: Simplify right side
    86,100.98x = 7,684,073,169.23
  5. Step 5: Solve for x
    x = 7,684,073,169.23/86,100.98
  6. Step 6: Final answer
    x = 89,244.90

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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.