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Finding the Fourth Proportional to 539,775.02, 809,663.55 and 140,415.15

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Solution

The fourth proportional to 539,775.02, 809,663.55 and 140,415.15 is: 210,622.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,775.02 : 809,663.55 = 140,415.15 : x
  2. Step 2: Convert to fraction form
    539,775.02/809,663.55 = 140,415.15/x
  3. Step 3: Cross multiply
    539,775.02x = 809,663.55 × 140,415.15
  4. Step 4: Simplify right side
    539,775.02x = 113,689,028,822.78
  5. Step 5: Solve for x
    x = 113,689,028,822.78/539,775.02
  6. Step 6: Final answer
    x = 210,622.99

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Similar ratio
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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.