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Finding the Fourth Proportional to 236,321.60, 354,482.40 and 86,512.10

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Solution

The fourth proportional to 236,321.60, 354,482.40 and 86,512.10 is: 129,768.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,321.60 : 354,482.40 = 86,512.10 : x
  2. Step 2: Convert to fraction form
    236,321.60/354,482.40 = 86,512.10/x
  3. Step 3: Cross multiply
    236,321.60x = 354,482.40 × 86,512.10
  4. Step 4: Simplify right side
    236,321.60x = 30,667,016,837.04
  5. Step 5: Solve for x
    x = 30,667,016,837.04/236,321.60
  6. Step 6: Final answer
    x = 129,768.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.