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Finding the Fourth Proportional to 315,620.60, 473,149.02 and 115,894.58

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Solution

The fourth proportional to 315,620.60, 473,149.02 and 115,894.58 is: 173,738.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,620.60 : 473,149.02 = 115,894.58 : x
  2. Step 2: Convert to fraction form
    315,620.60/473,149.02 = 115,894.58/x
  3. Step 3: Cross multiply
    315,620.60x = 473,149.02 × 115,894.58
  4. Step 4: Simplify right side
    315,620.60x = 54,835,406,950.31
  5. Step 5: Solve for x
    x = 54,835,406,950.31/315,620.60
  6. Step 6: Final answer
    x = 173,738.36

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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.