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Finding the Fourth Proportional to 606,878.10, 911,301.30 and 439,572.60

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Solution

The fourth proportional to 606,878.10, 911,301.30 and 439,572.60 is: 660,071.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,878.10 : 911,301.30 = 439,572.60 : x
  2. Step 2: Convert to fraction form
    606,878.10/911,301.30 = 439,572.60/x
  3. Step 3: Cross multiply
    606,878.10x = 911,301.30 × 439,572.60
  4. Step 4: Simplify right side
    606,878.10x = 400,583,081,824.38
  5. Step 5: Solve for x
    x = 400,583,081,824.38/606,878.10
  6. Step 6: Final answer
    x = 660,071.74

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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.