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Finding the Fourth Proportional to 428,188.32, 590,962.81 and 246,864.81

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Solution

The fourth proportional to 428,188.32, 590,962.81 and 246,864.81 is: 340,709.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,188.32 : 590,962.81 = 246,864.81 : x
  2. Step 2: Convert to fraction form
    428,188.32/590,962.81 = 246,864.81/x
  3. Step 3: Cross multiply
    428,188.32x = 590,962.81 × 246,864.81
  4. Step 4: Simplify right side
    428,188.32x = 145,887,921,807.72
  5. Step 5: Solve for x
    x = 145,887,921,807.72/428,188.32
  6. Step 6: Final answer
    x = 340,709.72

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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.