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Finding the Fourth Proportional to 70,016.04, 105,067.80 and 28,463.04

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Solution

The fourth proportional to 70,016.04, 105,067.80 and 28,463.04 is: 42,712.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,016.04 : 105,067.80 = 28,463.04 : x
  2. Step 2: Convert to fraction form
    70,016.04/105,067.80 = 28,463.04/x
  3. Step 3: Cross multiply
    70,016.04x = 105,067.80 × 28,463.04
  4. Step 4: Simplify right side
    70,016.04x = 2,990,548,994.11
  5. Step 5: Solve for x
    x = 2,990,548,994.11/70,016.04
  6. Step 6: Final answer
    x = 42,712.34

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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.