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Finding the Fourth Proportional to 539,774.70, 808,366.05 and 289,905.90

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Solution

The fourth proportional to 539,774.70, 808,366.05 and 289,905.90 is: 434,162.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,774.70 : 808,366.05 = 289,905.90 : x
  2. Step 2: Convert to fraction form
    539,774.70/808,366.05 = 289,905.90/x
  3. Step 3: Cross multiply
    539,774.70x = 808,366.05 × 289,905.90
  4. Step 4: Simplify right side
    539,774.70x = 234,350,087,254.70
  5. Step 5: Solve for x
    x = 234,350,087,254.70/539,774.70
  6. Step 6: Final answer
    x = 434,162.79

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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.