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Finding the Fourth Proportional to 487,355.20, 731,032.80 and 468,692.80

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Solution

The fourth proportional to 487,355.20, 731,032.80 and 468,692.80 is: 703,039.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,355.20 : 731,032.80 = 468,692.80 : x
  2. Step 2: Convert to fraction form
    487,355.20/731,032.80 = 468,692.80/x
  3. Step 3: Cross multiply
    487,355.20x = 731,032.80 × 468,692.80
  4. Step 4: Simplify right side
    487,355.20x = 342,629,809,923.84
  5. Step 5: Solve for x
    x = 342,629,809,923.84/487,355.20
  6. Step 6: Final answer
    x = 703,039.20

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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.