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Finding the Fourth Proportional to 374,474.79, 516,778.65 and 213,327.45

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Solution

The fourth proportional to 374,474.79, 516,778.65 and 213,327.45 is: 294,393.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,474.79 : 516,778.65 = 213,327.45 : x
  2. Step 2: Convert to fraction form
    374,474.79/516,778.65 = 213,327.45/x
  3. Step 3: Cross multiply
    374,474.79x = 516,778.65 × 213,327.45
  4. Step 4: Simplify right side
    374,474.79x = 110,243,071,618.94
  5. Step 5: Solve for x
    x = 110,243,071,618.94/374,474.79
  6. Step 6: Final answer
    x = 294,393.84

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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.