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Finding the Fourth Proportional to 315,348.80, 473,023.20 and 268,109.60

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Solution

The fourth proportional to 315,348.80, 473,023.20 and 268,109.60 is: 402,164.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,348.80 : 473,023.20 = 268,109.60 : x
  2. Step 2: Convert to fraction form
    315,348.80/473,023.20 = 268,109.60/x
  3. Step 3: Cross multiply
    315,348.80x = 473,023.20 × 268,109.60
  4. Step 4: Simplify right side
    315,348.80x = 126,822,060,942.72
  5. Step 5: Solve for x
    x = 126,822,060,942.72/315,348.80
  6. Step 6: Final answer
    x = 402,164.40

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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.