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Finding the Fourth Proportional to 419,066.34, 578,330.46 and 246,991.56

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Solution

The fourth proportional to 419,066.34, 578,330.46 and 246,991.56 is: 340,859.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,066.34 : 578,330.46 = 246,991.56 : x
  2. Step 2: Convert to fraction form
    419,066.34/578,330.46 = 246,991.56/x
  3. Step 3: Cross multiply
    419,066.34x = 578,330.46 × 246,991.56
  4. Step 4: Simplify right side
    419,066.34x = 142,842,742,510.92
  5. Step 5: Solve for x
    x = 142,842,742,510.92/419,066.34
  6. Step 6: Final answer
    x = 340,859.50

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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.