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Finding the Fourth Proportional to 615,189.60, 922,128.30 and 235,963.80

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Solution

The fourth proportional to 615,189.60, 922,128.30 and 235,963.80 is: 353,694.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,189.60 : 922,128.30 = 235,963.80 : x
  2. Step 2: Convert to fraction form
    615,189.60/922,128.30 = 235,963.80/x
  3. Step 3: Cross multiply
    615,189.60x = 922,128.30 × 235,963.80
  4. Step 4: Simplify right side
    615,189.60x = 217,588,897,755.54
  5. Step 5: Solve for x
    x = 217,588,897,755.54/615,189.60
  6. Step 6: Final answer
    x = 353,694.04

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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.