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Finding the Fourth Proportional to 239,413.20, 358,428.60 and 146,101.20

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Solution

The fourth proportional to 239,413.20, 358,428.60 and 146,101.20 is: 218,730.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,413.20 : 358,428.60 = 146,101.20 : x
  2. Step 2: Convert to fraction form
    239,413.20/358,428.60 = 146,101.20/x
  3. Step 3: Cross multiply
    239,413.20x = 358,428.60 × 146,101.20
  4. Step 4: Simplify right side
    239,413.20x = 52,366,848,574.32
  5. Step 5: Solve for x
    x = 52,366,848,574.32/239,413.20
  6. Step 6: Final answer
    x = 218,730.00

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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.