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Finding the Fourth Proportional to 316,715.40, 437,043.60 and 180,745.56

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Solution

The fourth proportional to 316,715.40, 437,043.60 and 180,745.56 is: 249,415.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,715.40 : 437,043.60 = 180,745.56 : x
  2. Step 2: Convert to fraction form
    316,715.40/437,043.60 = 180,745.56/x
  3. Step 3: Cross multiply
    316,715.40x = 437,043.60 × 180,745.56
  4. Step 4: Simplify right side
    316,715.40x = 78,993,690,226.42
  5. Step 5: Solve for x
    x = 78,993,690,226.42/316,715.40
  6. Step 6: Final answer
    x = 249,415.37

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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.