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Finding the Fourth Proportional to 681,281.82, 940,123.90 and 409,188.03

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Solution

The fourth proportional to 681,281.82, 940,123.90 and 409,188.03 is: 564,652.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,281.82 : 940,123.90 = 409,188.03 : x
  2. Step 2: Convert to fraction form
    681,281.82/940,123.90 = 409,188.03/x
  3. Step 3: Cross multiply
    681,281.82x = 940,123.90 × 409,188.03
  4. Step 4: Simplify right side
    681,281.82x = 384,687,446,596.92
  5. Step 5: Solve for x
    x = 384,687,446,596.92/681,281.82
  6. Step 6: Final answer
    x = 564,652.45

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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.