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Finding the Fourth Proportional to 539,656.40, 808,793.40 and 414,376.40

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Solution

The fourth proportional to 539,656.40, 808,793.40 and 414,376.40 is: 621,033.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,656.40 : 808,793.40 = 414,376.40 : x
  2. Step 2: Convert to fraction form
    539,656.40/808,793.40 = 414,376.40/x
  3. Step 3: Cross multiply
    539,656.40x = 808,793.40 × 414,376.40
  4. Step 4: Simplify right side
    539,656.40x = 335,144,897,435.76
  5. Step 5: Solve for x
    x = 335,144,897,435.76/539,656.40
  6. Step 6: Final answer
    x = 621,033.86

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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.