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Finding the Fourth Proportional to 621,819.60, 934,111.80 and 605,230.80

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Solution

The fourth proportional to 621,819.60, 934,111.80 and 605,230.80 is: 909,191.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,819.60 : 934,111.80 = 605,230.80 : x
  2. Step 2: Convert to fraction form
    621,819.60/934,111.80 = 605,230.80/x
  3. Step 3: Cross multiply
    621,819.60x = 934,111.80 × 605,230.80
  4. Step 4: Simplify right side
    621,819.60x = 565,353,232,003.44
  5. Step 5: Solve for x
    x = 565,353,232,003.44/621,819.60
  6. Step 6: Final answer
    x = 909,191.72

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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.