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Finding the Fourth Proportional to 404,731.50, 607,126.68 and 155,413.50

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Solution

The fourth proportional to 404,731.50, 607,126.68 and 155,413.50 is: 233,131.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,731.50 : 607,126.68 = 155,413.50 : x
  2. Step 2: Convert to fraction form
    404,731.50/607,126.68 = 155,413.50/x
  3. Step 3: Cross multiply
    404,731.50x = 607,126.68 × 155,413.50
  4. Step 4: Simplify right side
    404,731.50x = 94,355,682,282.18
  5. Step 5: Solve for x
    x = 94,355,682,282.18/404,731.50
  6. Step 6: Final answer
    x = 233,131.55

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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.