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Finding the Fourth Proportional to 472,316.80, 708,693.90 and 247,930.60

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Solution

The fourth proportional to 472,316.80, 708,693.90 and 247,930.60 is: 372,010.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,316.80 : 708,693.90 = 247,930.60 : x
  2. Step 2: Convert to fraction form
    472,316.80/708,693.90 = 247,930.60/x
  3. Step 3: Cross multiply
    472,316.80x = 708,693.90 × 247,930.60
  4. Step 4: Simplify right side
    472,316.80x = 175,706,903,843.34
  5. Step 5: Solve for x
    x = 175,706,903,843.34/472,316.80
  6. Step 6: Final answer
    x = 372,010.70

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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.