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Finding the Fourth Proportional to 103,632.60, 155,448.90 and 101,904.60

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Solution

The fourth proportional to 103,632.60, 155,448.90 and 101,904.60 is: 152,856.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,632.60 : 155,448.90 = 101,904.60 : x
  2. Step 2: Convert to fraction form
    103,632.60/155,448.90 = 101,904.60/x
  3. Step 3: Cross multiply
    103,632.60x = 155,448.90 × 101,904.60
  4. Step 4: Simplify right side
    103,632.60x = 15,840,957,974.94
  5. Step 5: Solve for x
    x = 15,840,957,974.94/103,632.60
  6. Step 6: Final answer
    x = 152,856.90

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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.