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Finding the Fourth Proportional to 392,416.03, 541,637.67 and 231,378.36

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Solution

The fourth proportional to 392,416.03, 541,637.67 and 231,378.36 is: 319,363.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,416.03 : 541,637.67 = 231,378.36 : x
  2. Step 2: Convert to fraction form
    392,416.03/541,637.67 = 231,378.36/x
  3. Step 3: Cross multiply
    392,416.03x = 541,637.67 × 231,378.36
  4. Step 4: Simplify right side
    392,416.03x = 125,323,235,798.82
  5. Step 5: Solve for x
    x = 125,323,235,798.82/392,416.03
  6. Step 6: Final answer
    x = 319,363.19

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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.