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Finding the Fourth Proportional to 318,347.97, 439,318.05 and 180,553.11

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Solution

The fourth proportional to 318,347.97, 439,318.05 and 180,553.11 is: 249,162.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,347.97 : 439,318.05 = 180,553.11 : x
  2. Step 2: Convert to fraction form
    318,347.97/439,318.05 = 180,553.11/x
  3. Step 3: Cross multiply
    318,347.97x = 439,318.05 × 180,553.11
  4. Step 4: Simplify right side
    318,347.97x = 79,320,240,206.64
  5. Step 5: Solve for x
    x = 79,320,240,206.64/318,347.97
  6. Step 6: Final answer
    x = 249,162.07

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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.