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Finding the Fourth Proportional to 331,482.32, 457,478.64 and 202,413.68

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Solution

The fourth proportional to 331,482.32, 457,478.64 and 202,413.68 is: 279,351.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,482.32 : 457,478.64 = 202,413.68 : x
  2. Step 2: Convert to fraction form
    331,482.32/457,478.64 = 202,413.68/x
  3. Step 3: Cross multiply
    331,482.32x = 457,478.64 × 202,413.68
  4. Step 4: Simplify right side
    331,482.32x = 92,599,935,043.80
  5. Step 5: Solve for x
    x = 92,599,935,043.80/331,482.32
  6. Step 6: Final answer
    x = 279,351.05

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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.