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Finding the Fourth Proportional to 684,957.64, 945,431.52 and 398,533.06

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Solution

The fourth proportional to 684,957.64, 945,431.52 and 398,533.06 is: 550,086.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,957.64 : 945,431.52 = 398,533.06 : x
  2. Step 2: Convert to fraction form
    684,957.64/945,431.52 = 398,533.06/x
  3. Step 3: Cross multiply
    684,957.64x = 945,431.52 × 398,533.06
  4. Step 4: Simplify right side
    684,957.64x = 376,785,716,686.05
  5. Step 5: Solve for x
    x = 376,785,716,686.05/684,957.64
  6. Step 6: Final answer
    x = 550,086.16

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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.