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Finding the Fourth Proportional to 436,139.60, 654,209.40 and 404,646.80

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Solution

The fourth proportional to 436,139.60, 654,209.40 and 404,646.80 is: 606,970.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,139.60 : 654,209.40 = 404,646.80 : x
  2. Step 2: Convert to fraction form
    436,139.60/654,209.40 = 404,646.80/x
  3. Step 3: Cross multiply
    436,139.60x = 654,209.40 × 404,646.80
  4. Step 4: Simplify right side
    436,139.60x = 264,723,740,239.92
  5. Step 5: Solve for x
    x = 264,723,740,239.92/436,139.60
  6. Step 6: Final answer
    x = 606,970.20

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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.