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Finding the Fourth Proportional to 200,705.64, 276,846.84 and 128,962.32

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Solution

The fourth proportional to 200,705.64, 276,846.84 and 128,962.32 is: 177,886.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,705.64 : 276,846.84 = 128,962.32 : x
  2. Step 2: Convert to fraction form
    200,705.64/276,846.84 = 128,962.32/x
  3. Step 3: Cross multiply
    200,705.64x = 276,846.84 × 128,962.32
  4. Step 4: Simplify right side
    200,705.64x = 35,702,810,771.07
  5. Step 5: Solve for x
    x = 35,702,810,771.07/200,705.64
  6. Step 6: Final answer
    x = 177,886.43

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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.