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Finding the Fourth Proportional to 617,919.40, 925,323.90 and 406,412.20

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Solution

The fourth proportional to 617,919.40, 925,323.90 and 406,412.20 is: 608,595.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,919.40 : 925,323.90 = 406,412.20 : x
  2. Step 2: Convert to fraction form
    617,919.40/925,323.90 = 406,412.20/x
  3. Step 3: Cross multiply
    617,919.40x = 925,323.90 × 406,412.20
  4. Step 4: Simplify right side
    617,919.40x = 376,062,921,911.58
  5. Step 5: Solve for x
    x = 376,062,921,911.58/617,919.40
  6. Step 6: Final answer
    x = 608,595.43

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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.