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Finding the Fourth Proportional to 548,036.12, 821,957.28 and 148,708.01

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Solution

The fourth proportional to 548,036.12, 821,957.28 and 148,708.01 is: 223,035.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,036.12 : 821,957.28 = 148,708.01 : x
  2. Step 2: Convert to fraction form
    548,036.12/821,957.28 = 148,708.01/x
  3. Step 3: Cross multiply
    548,036.12x = 821,957.28 × 148,708.01
  4. Step 4: Simplify right side
    548,036.12x = 122,231,631,413.81
  5. Step 5: Solve for x
    x = 122,231,631,413.81/548,036.12
  6. Step 6: Final answer
    x = 223,035.72

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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.