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Finding the Fourth Proportional to 553,600.40, 830,789.40 and 354,405.20

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Solution

The fourth proportional to 553,600.40, 830,789.40 and 354,405.20 is: 531,856.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,600.40 : 830,789.40 = 354,405.20 : x
  2. Step 2: Convert to fraction form
    553,600.40/830,789.40 = 354,405.20/x
  3. Step 3: Cross multiply
    553,600.40x = 830,789.40 × 354,405.20
  4. Step 4: Simplify right side
    553,600.40x = 294,436,083,464.88
  5. Step 5: Solve for x
    x = 294,436,083,464.88/553,600.40
  6. Step 6: Final answer
    x = 531,856.70

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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.