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Finding the Fourth Proportional to 154,253.57, 212,869.32 and 86,270.27

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Solution

The fourth proportional to 154,253.57, 212,869.32 and 86,270.27 is: 119,052.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,253.57 : 212,869.32 = 86,270.27 : x
  2. Step 2: Convert to fraction form
    154,253.57/212,869.32 = 86,270.27/x
  3. Step 3: Cross multiply
    154,253.57x = 212,869.32 × 86,270.27
  4. Step 4: Simplify right side
    154,253.57x = 18,364,292,323.26
  5. Step 5: Solve for x
    x = 18,364,292,323.26/154,253.57
  6. Step 6: Final answer
    x = 119,052.63

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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.