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Finding the Fourth Proportional to 86,525.60, 119,405.39 and 50,715.60

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Solution

The fourth proportional to 86,525.60, 119,405.39 and 50,715.60 is: 69,987.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,525.60 : 119,405.39 = 50,715.60 : x
  2. Step 2: Convert to fraction form
    86,525.60/119,405.39 = 50,715.60/x
  3. Step 3: Cross multiply
    86,525.60x = 119,405.39 × 50,715.60
  4. Step 4: Simplify right side
    86,525.60x = 6,055,715,743.51
  5. Step 5: Solve for x
    x = 6,055,715,743.51/86,525.60
  6. Step 6: Final answer
    x = 69,987.57

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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.