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Finding the Fourth Proportional to 104,432.80, 156,649.20 and 64,969.60

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Solution

The fourth proportional to 104,432.80, 156,649.20 and 64,969.60 is: 97,454.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,432.80 : 156,649.20 = 64,969.60 : x
  2. Step 2: Convert to fraction form
    104,432.80/156,649.20 = 64,969.60/x
  3. Step 3: Cross multiply
    104,432.80x = 156,649.20 × 64,969.60
  4. Step 4: Simplify right side
    104,432.80x = 10,177,435,864.32
  5. Step 5: Solve for x
    x = 10,177,435,864.32/104,432.80
  6. Step 6: Final answer
    x = 97,454.40

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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.