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Finding the Fourth Proportional to 612,099.60, 918,235.80 and 191,331.60

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Solution

The fourth proportional to 612,099.60, 918,235.80 and 191,331.60 is: 287,024.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,099.60 : 918,235.80 = 191,331.60 : x
  2. Step 2: Convert to fraction form
    612,099.60/918,235.80 = 191,331.60/x
  3. Step 3: Cross multiply
    612,099.60x = 918,235.80 × 191,331.60
  4. Step 4: Simplify right side
    612,099.60x = 175,687,524,791.28
  5. Step 5: Solve for x
    x = 175,687,524,791.28/612,099.60
  6. Step 6: Final answer
    x = 287,024.41

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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.