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Finding the Fourth Proportional to 614,437.80, 923,039.10 and 427,813.80

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Solution

The fourth proportional to 614,437.80, 923,039.10 and 427,813.80 is: 642,683.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,437.80 : 923,039.10 = 427,813.80 : x
  2. Step 2: Convert to fraction form
    614,437.80/923,039.10 = 427,813.80/x
  3. Step 3: Cross multiply
    614,437.80x = 923,039.10 × 427,813.80
  4. Step 4: Simplify right side
    614,437.80x = 394,888,864,919.58
  5. Step 5: Solve for x
    x = 394,888,864,919.58/614,437.80
  6. Step 6: Final answer
    x = 642,683.22

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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.