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Finding the Fourth Proportional to 618,369.70, 927,457.35 and 218,953.30

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Solution

The fourth proportional to 618,369.70, 927,457.35 and 218,953.30 is: 328,395.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,369.70 : 927,457.35 = 218,953.30 : x
  2. Step 2: Convert to fraction form
    618,369.70/927,457.35 = 218,953.30/x
  3. Step 3: Cross multiply
    618,369.70x = 927,457.35 × 218,953.30
  4. Step 4: Simplify right side
    618,369.70x = 203,069,847,391.76
  5. Step 5: Solve for x
    x = 203,069,847,391.76/618,369.70
  6. Step 6: Final answer
    x = 328,395.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.