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Finding the Fourth Proportional to 653,555.40, 980,333.91 and 204,278.58

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Solution

The fourth proportional to 653,555.40, 980,333.91 and 204,278.58 is: 306,418.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,555.40 : 980,333.91 = 204,278.58 : x
  2. Step 2: Convert to fraction form
    653,555.40/980,333.91 = 204,278.58/x
  3. Step 3: Cross multiply
    653,555.40x = 980,333.91 × 204,278.58
  4. Step 4: Simplify right side
    653,555.40x = 200,261,219,060.65
  5. Step 5: Solve for x
    x = 200,261,219,060.65/653,555.40
  6. Step 6: Final answer
    x = 306,418.12

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1.5x scale

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.