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Finding the Fourth Proportional to 472,075.80, 708,408.95 and 191,593.05

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Solution

The fourth proportional to 472,075.80, 708,408.95 and 191,593.05 is: 287,509.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,075.80 : 708,408.95 = 191,593.05 : x
  2. Step 2: Convert to fraction form
    472,075.80/708,408.95 = 191,593.05/x
  3. Step 3: Cross multiply
    472,075.80x = 708,408.95 × 191,593.05
  4. Step 4: Simplify right side
    472,075.80x = 135,726,230,419.83
  5. Step 5: Solve for x
    x = 135,726,230,419.83/472,075.80
  6. Step 6: Final answer
    x = 287,509.40

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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.