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Finding the Fourth Proportional to 335,413.28, 503,120.28 and 86,095.28

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Solution

The fourth proportional to 335,413.28, 503,120.28 and 86,095.28 is: 129,143.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,413.28 : 503,120.28 = 86,095.28 : x
  2. Step 2: Convert to fraction form
    335,413.28/503,120.28 = 86,095.28/x
  3. Step 3: Cross multiply
    335,413.28x = 503,120.28 × 86,095.28
  4. Step 4: Simplify right side
    335,413.28x = 43,316,281,380.28
  5. Step 5: Solve for x
    x = 43,316,281,380.28/335,413.28
  6. Step 6: Final answer
    x = 129,143.01

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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.