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Finding the Fourth Proportional to 394,940.64, 592,412.62 and 125,070.16

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Solution

The fourth proportional to 394,940.64, 592,412.62 and 125,070.16 is: 187,605.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,940.64 : 592,412.62 = 125,070.16 : x
  2. Step 2: Convert to fraction form
    394,940.64/592,412.62 = 125,070.16/x
  3. Step 3: Cross multiply
    394,940.64x = 592,412.62 × 125,070.16
  4. Step 4: Simplify right side
    394,940.64x = 74,093,141,169.42
  5. Step 5: Solve for x
    x = 74,093,141,169.42/394,940.64
  6. Step 6: Final answer
    x = 187,605.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.