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Finding the Fourth Proportional to 154,241.16, 212,863.65 and 86,264.46

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Solution

The fourth proportional to 154,241.16, 212,863.65 and 86,264.46 is: 119,051.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,241.16 : 212,863.65 = 86,264.46 : x
  2. Step 2: Convert to fraction form
    154,241.16/212,863.65 = 86,264.46/x
  3. Step 3: Cross multiply
    154,241.16x = 212,863.65 × 86,264.46
  4. Step 4: Simplify right side
    154,241.16x = 18,362,568,942.61
  5. Step 5: Solve for x
    x = 18,362,568,942.61/154,241.16
  6. Step 6: Final answer
    x = 119,051.03

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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.