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Finding the Fourth Proportional to 200,570.64, 276,815.12 and 115,685.84

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Solution

The fourth proportional to 200,570.64, 276,815.12 and 115,685.84 is: 159,662.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,570.64 : 276,815.12 = 115,685.84 : x
  2. Step 2: Convert to fraction form
    200,570.64/276,815.12 = 115,685.84/x
  3. Step 3: Cross multiply
    200,570.64x = 276,815.12 × 115,685.84
  4. Step 4: Simplify right side
    200,570.64x = 32,023,589,681.90
  5. Step 5: Solve for x
    x = 32,023,589,681.90/200,570.64
  6. Step 6: Final answer
    x = 159,662.40

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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.