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Finding the Fourth Proportional to 620,177.07, 928,909.31 and 439,715.48

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Solution

The fourth proportional to 620,177.07, 928,909.31 and 439,715.48 is: 658,611.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,177.07 : 928,909.31 = 439,715.48 : x
  2. Step 2: Convert to fraction form
    620,177.07/928,909.31 = 439,715.48/x
  3. Step 3: Cross multiply
    620,177.07x = 928,909.31 × 439,715.48
  4. Step 4: Simplify right side
    620,177.07x = 408,455,796,280.00
  5. Step 5: Solve for x
    x = 408,455,796,280.00/620,177.07
  6. Step 6: Final answer
    x = 658,611.58

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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.