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Finding the Fourth Proportional to 353,155.50, 487,338.75 and 200,191.50

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Solution

The fourth proportional to 353,155.50, 487,338.75 and 200,191.50 is: 276,255.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,155.50 : 487,338.75 = 200,191.50 : x
  2. Step 2: Convert to fraction form
    353,155.50/487,338.75 = 200,191.50/x
  3. Step 3: Cross multiply
    353,155.50x = 487,338.75 × 200,191.50
  4. Step 4: Simplify right side
    353,155.50x = 97,561,075,370.63
  5. Step 5: Solve for x
    x = 97,561,075,370.63/353,155.50
  6. Step 6: Final answer
    x = 276,255.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.