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Finding the Fourth Proportional to 156,793.10, 235,189.65 and 155,918.30

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Solution

The fourth proportional to 156,793.10, 235,189.65 and 155,918.30 is: 233,877.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,793.10 : 235,189.65 = 155,918.30 : x
  2. Step 2: Convert to fraction form
    156,793.10/235,189.65 = 155,918.30/x
  3. Step 3: Cross multiply
    156,793.10x = 235,189.65 × 155,918.30
  4. Step 4: Simplify right side
    156,793.10x = 36,670,370,405.60
  5. Step 5: Solve for x
    x = 36,670,370,405.60/156,793.10
  6. Step 6: Final answer
    x = 233,877.45

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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.