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Finding the Fourth Proportional to 411,950.80, 617,926.20 and 403,656.40

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Solution

The fourth proportional to 411,950.80, 617,926.20 and 403,656.40 is: 605,484.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,950.80 : 617,926.20 = 403,656.40 : x
  2. Step 2: Convert to fraction form
    411,950.80/617,926.20 = 403,656.40/x
  3. Step 3: Cross multiply
    411,950.80x = 617,926.20 × 403,656.40
  4. Step 4: Simplify right side
    411,950.80x = 249,429,865,357.68
  5. Step 5: Solve for x
    x = 249,429,865,357.68/411,950.80
  6. Step 6: Final answer
    x = 605,484.60

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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.