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Finding the Fourth Proportional to 703,728.64, 971,251.20 and 553,953.28

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Solution

The fourth proportional to 703,728.64, 971,251.20 and 553,953.28 is: 764,538.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,728.64 : 971,251.20 = 553,953.28 : x
  2. Step 2: Convert to fraction form
    703,728.64/971,251.20 = 553,953.28/x
  3. Step 3: Cross multiply
    703,728.64x = 971,251.20 × 553,953.28
  4. Step 4: Simplify right side
    703,728.64x = 538,027,787,943.94
  5. Step 5: Solve for x
    x = 538,027,787,943.94/703,728.64
  6. Step 6: Final answer
    x = 764,538.71

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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.