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Finding the Fourth Proportional to 608,922.40, 913,383.60 and 409,856.80

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Solution

The fourth proportional to 608,922.40, 913,383.60 and 409,856.80 is: 614,785.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,922.40 : 913,383.60 = 409,856.80 : x
  2. Step 2: Convert to fraction form
    608,922.40/913,383.60 = 409,856.80/x
  3. Step 3: Cross multiply
    608,922.40x = 913,383.60 × 409,856.80
  4. Step 4: Simplify right side
    608,922.40x = 374,356,479,468.48
  5. Step 5: Solve for x
    x = 374,356,479,468.48/608,922.40
  6. Step 6: Final answer
    x = 614,785.20

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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.