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Finding the Fourth Proportional to 638,410.60, 957,615.90 and 533,434.60

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Solution

The fourth proportional to 638,410.60, 957,615.90 and 533,434.60 is: 800,151.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,410.60 : 957,615.90 = 533,434.60 : x
  2. Step 2: Convert to fraction form
    638,410.60/957,615.90 = 533,434.60/x
  3. Step 3: Cross multiply
    638,410.60x = 957,615.90 × 533,434.60
  4. Step 4: Simplify right side
    638,410.60x = 510,825,454,570.14
  5. Step 5: Solve for x
    x = 510,825,454,570.14/638,410.60
  6. Step 6: Final answer
    x = 800,151.90

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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.