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Finding the Fourth Proportional to 668,455.77, 922,586.90 and 396,673.53

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Solution

The fourth proportional to 668,455.77, 922,586.90 and 396,673.53 is: 547,479.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,455.77 : 922,586.90 = 396,673.53 : x
  2. Step 2: Convert to fraction form
    668,455.77/922,586.90 = 396,673.53/x
  3. Step 3: Cross multiply
    668,455.77x = 922,586.90 × 396,673.53
  4. Step 4: Simplify right side
    668,455.77x = 365,965,800,371.39
  5. Step 5: Solve for x
    x = 365,965,800,371.39/668,455.77
  6. Step 6: Final answer
    x = 547,479.45

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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.