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Finding the Fourth Proportional to 472,548.60, 708,578.10 and 140,081.40

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Solution

The fourth proportional to 472,548.60, 708,578.10 and 140,081.40 is: 210,049.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,548.60 : 708,578.10 = 140,081.40 : x
  2. Step 2: Convert to fraction form
    472,548.60/708,578.10 = 140,081.40/x
  3. Step 3: Cross multiply
    472,548.60x = 708,578.10 × 140,081.40
  4. Step 4: Simplify right side
    472,548.60x = 99,258,612,257.34
  5. Step 5: Solve for x
    x = 99,258,612,257.34/472,548.60
  6. Step 6: Final answer
    x = 210,049.53

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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.