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Finding the Fourth Proportional to 104,032.60, 155,660.10 and 69,040.60

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Solution

The fourth proportional to 104,032.60, 155,660.10 and 69,040.60 is: 103,302.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,032.60 : 155,660.10 = 69,040.60 : x
  2. Step 2: Convert to fraction form
    104,032.60/155,660.10 = 69,040.60/x
  3. Step 3: Cross multiply
    104,032.60x = 155,660.10 × 69,040.60
  4. Step 4: Simplify right side
    104,032.60x = 10,746,866,700.06
  5. Step 5: Solve for x
    x = 10,746,866,700.06/104,032.60
  6. Step 6: Final answer
    x = 103,302.88

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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.