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Finding the Fourth Proportional to 404,417.40, 606,654.90 and 123,934.20

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Solution

The fourth proportional to 404,417.40, 606,654.90 and 123,934.20 is: 185,910.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,417.40 : 606,654.90 = 123,934.20 : x
  2. Step 2: Convert to fraction form
    404,417.40/606,654.90 = 123,934.20/x
  3. Step 3: Cross multiply
    404,417.40x = 606,654.90 × 123,934.20
  4. Step 4: Simplify right side
    404,417.40x = 75,185,289,707.58
  5. Step 5: Solve for x
    x = 75,185,289,707.58/404,417.40
  6. Step 6: Final answer
    x = 185,910.13

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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.