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Finding the Fourth Proportional to 86,712.75, 119,663.60 and 46,968.75

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Solution

The fourth proportional to 86,712.75, 119,663.60 and 46,968.75 is: 64,816.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,712.75 : 119,663.60 = 46,968.75 : x
  2. Step 2: Convert to fraction form
    86,712.75/119,663.60 = 46,968.75/x
  3. Step 3: Cross multiply
    86,712.75x = 119,663.60 × 46,968.75
  4. Step 4: Simplify right side
    86,712.75x = 5,620,449,477.66
  5. Step 5: Solve for x
    x = 5,620,449,477.66/86,712.75
  6. Step 6: Final answer
    x = 64,816.88

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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.