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Finding the Fourth Proportional to 614,426.80, 921,769.80 and 193,745.20

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Solution

The fourth proportional to 614,426.80, 921,769.80 and 193,745.20 is: 290,658.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,426.80 : 921,769.80 = 193,745.20 : x
  2. Step 2: Convert to fraction form
    614,426.80/921,769.80 = 193,745.20/x
  3. Step 3: Cross multiply
    614,426.80x = 921,769.80 × 193,745.20
  4. Step 4: Simplify right side
    614,426.80x = 178,588,474,254.96
  5. Step 5: Solve for x
    x = 178,588,474,254.96/614,426.80
  6. Step 6: Final answer
    x = 290,658.67

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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.