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Finding the Fourth Proportional to 515,695.64, 711,750.90 and 324,768.92

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Solution

The fourth proportional to 515,695.64, 711,750.90 and 324,768.92 is: 448,238.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,695.64 : 711,750.90 = 324,768.92 : x
  2. Step 2: Convert to fraction form
    515,695.64/711,750.90 = 324,768.92/x
  3. Step 3: Cross multiply
    515,695.64x = 711,750.90 × 324,768.92
  4. Step 4: Simplify right side
    515,695.64x = 231,154,571,102.03
  5. Step 5: Solve for x
    x = 231,154,571,102.03/515,695.64
  6. Step 6: Final answer
    x = 448,238.37

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Double scale
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Similar ratio
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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.