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Finding the Fourth Proportional to 520,066.70, 780,100.05 and 204,533.90

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Solution

The fourth proportional to 520,066.70, 780,100.05 and 204,533.90 is: 306,800.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,066.70 : 780,100.05 = 204,533.90 : x
  2. Step 2: Convert to fraction form
    520,066.70/780,100.05 = 204,533.90/x
  3. Step 3: Cross multiply
    520,066.70x = 780,100.05 × 204,533.90
  4. Step 4: Simplify right side
    520,066.70x = 159,556,905,616.70
  5. Step 5: Solve for x
    x = 159,556,905,616.70/520,066.70
  6. Step 6: Final answer
    x = 306,800.85

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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.