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Finding the Fourth Proportional to 291,453.73, 437,196.20 and 91,789.66

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Solution

The fourth proportional to 291,453.73, 437,196.20 and 91,789.66 is: 137,689.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,453.73 : 437,196.20 = 91,789.66 : x
  2. Step 2: Convert to fraction form
    291,453.73/437,196.20 = 91,789.66/x
  3. Step 3: Cross multiply
    291,453.73x = 437,196.20 × 91,789.66
  4. Step 4: Simplify right side
    291,453.73x = 40,130,090,551.29
  5. Step 5: Solve for x
    x = 40,130,090,551.29/291,453.73
  6. Step 6: Final answer
    x = 137,689.40

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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.