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Finding the Fourth Proportional to 620,173.72, 928,904.29 and 439,712.13

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Solution

The fourth proportional to 620,173.72, 928,904.29 and 439,712.13 is: 658,606.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,173.72 : 928,904.29 = 439,712.13 : x
  2. Step 2: Convert to fraction form
    620,173.72/928,904.29 = 439,712.13/x
  3. Step 3: Cross multiply
    620,173.72x = 928,904.29 × 439,712.13
  4. Step 4: Simplify right side
    620,173.72x = 408,450,486,182.45
  5. Step 5: Solve for x
    x = 408,450,486,182.45/620,173.72
  6. Step 6: Final answer
    x = 658,606.57

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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.