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Finding the Fourth Proportional to 468,415.56, 646,413.78 and 253,557.39

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Solution

The fourth proportional to 468,415.56, 646,413.78 and 253,557.39 is: 349,909.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,415.56 : 646,413.78 = 253,557.39 : x
  2. Step 2: Convert to fraction form
    468,415.56/646,413.78 = 253,557.39/x
  3. Step 3: Cross multiply
    468,415.56x = 646,413.78 × 253,557.39
  4. Step 4: Simplify right side
    468,415.56x = 163,902,990,916.83
  5. Step 5: Solve for x
    x = 163,902,990,916.83/468,415.56
  6. Step 6: Final answer
    x = 349,909.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.