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Finding the Fourth Proportional to 279,853.39, 386,197.81 and 158,994.88

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Solution

The fourth proportional to 279,853.39, 386,197.81 and 158,994.88 is: 219,413.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,853.39 : 386,197.81 = 158,994.88 : x
  2. Step 2: Convert to fraction form
    279,853.39/386,197.81 = 158,994.88/x
  3. Step 3: Cross multiply
    279,853.39x = 386,197.81 × 158,994.88
  4. Step 4: Simplify right side
    279,853.39x = 61,403,473,094.23
  5. Step 5: Solve for x
    x = 61,403,473,094.23/279,853.39
  6. Step 6: Final answer
    x = 219,413.00

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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.